beat the computer!
DESCRIPTION
Beat the Computer!. Geometry Vocabulary for Unit 7. Directions: A slide will appear with a term Say the definition aloud before the computer can answer (5 sec.) You will hear a sound when the slide changes. base of a parallelogram. pg. 349. base of a parallelogram: - PowerPoint PPT PresentationTRANSCRIPT
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
Beat the Computer!
Geometry Vocabulary for Unit 7
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
Directions:•A slide will appear with a term•Say the definition aloud before the computer can answer (5 sec.)•You will hear a sound when the slide changes
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
base of a parallelogram
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
base of a parallelogram:
any of the sides of a parallelogram
base
pg. 349
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
altitude of a parallelogram
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
altitude of a parallelogram:a segment perpendicular to
the line containing that base drawn from the side
opposite the base altitude
pg. 349
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
height of a parallelogram
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
height of a parallelogram:
the length of an altitude length of
this segment
pg. 349
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
area of a parallelogram
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
area of a parallelogram:
A = bh
b
h
pg. 349
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
base of a rectangle
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
base of a rectangle:any side of the rectangle
(since, by definition, it is a parallelogram with four right
angles)
base
pg. 349
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
height of a rectangle
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
height of a rectangle:the side perpendicular
to the baseheight
base
pg. 349
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
area of a rectangle
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
area of a rectangle:A = bh
h
b
pg. 349
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
base of a triangle
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
base of a triangle:any side of a
trianglebas
e
base
base
pg. 350
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
height of a triangle
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
height of a triangle:length of the altitude to the line containing the
base
pg. 350
base
height
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
area of a triangle
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
area of a triangle:A = bh2
1
pg. 350
base
height
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
Pythagorean Theorem
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
Pythagorean Theorem:In a right triangle, the sum of the
squares of the lengths of the legs to the square of the length of the
hypotenuse. a2 + b2 = c2
a
b
c
pg. 357
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
Pythagorean triple
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
Pythagorean triple:a set of nonzero whole
numbers a, b, and c that satisfy the equation
a2 + b2 = c2
pg. 357
Some common triples: 3, 4, 5 5, 12, 13 8, 15, 17 7, 24, 25
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
45-45-90 Triangle Theorem
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
45-45-90 Triangle Theorem:both legs are congruent and
the length of the hypotenuse is times the
length of a leg
pg. 366
2
s
ss 2
45
45
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
30-60-90 Triangle Theorem
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
30-60-90 Triangle Theorem:The length of the hypotenuse is
twice the length of the shorter leg. The length of the longer leg is
times the length of the shorter leg.
s
pg. 367
3
s2s
3
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
height of a trapezoid
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
height of a trapezoid:the perpendicular
distance h between the basesbase
base
leg legb1
b2
h
pg. 374
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
area of a trapezoid
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
area of a trapezoid:A = h(b1 + b2)
b1
b2
h
21
pg. 374
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
area of a rhombus or
kite
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
area of a rhombus or kite:
A = d1d221
d1
d2
d1
d2
pg. 375area of a rhombus or kite:
A = d1d221
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
center of a regular polygon
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
center of a regular polygon:
the center of the circumscribed circle
pg. 380
center
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
radius of a regular polygon
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
radius of a regular polygon:
the distance from the center to a vertex
pg. 380
radius
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
apothem of a regular polygon
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
apothem of a regular polygon:
the perpendicular distance from the center
to a side
pg. 380
apothem
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
area of a regular polygon
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
area of a regular polygon:A = ap
pg. 380
21
a
p
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
circle
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
circle:a set of points in a plane equidistant from a given
point
pg. 386
circle
given point
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
center of a circle
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
center of a circle:the given point in which a set of points in a plane are
all equidistant
pg. 386
circle P
P
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
radius of a circle
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
radius of a circle:a segment that has one
endpoint at the center and the other on the circle
pg. 386
radius
P
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
congruent circles
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
congruent circles:circles that have congruent radii
pg. 386
r
P
q
Q
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
diameter
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
diameter:a segment that
contains the center of the circle
pg. 386
diameter
P
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
central angle
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
central angle:an angle whose vertex is the center of the circle
pg. 386
Central angle: NPO
P Q
O
NCentral angle: Q
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
arc
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
arc:part of a circle
pg. 387
arc
P
A
B
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
semicircle
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
semicircle:an arc that is half of a
circle
pg. 387
XYZ is a semicircle
PX
Y Z
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
minor arc
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
minor arc:an arc that is smaller
than a semicircle
pg. 387
AB is a minor arcA B
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
major arc
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
major arc:an arc that is greater
than a semicircle
pg. 387
MNO is a major arc
P
M
NO
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
adjacent arcs
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
adjacent arcs:arcs of the same circle that have exactly one point in
common
pg. 387
MN and NO are adjacent arcs
P
M
NO
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
circumference
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
circumference:the distance around the circle
C = d = 2r
pg. 388
P
C
d r
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
concentric circles
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
concentric circles:circles that lie in the same plane and have the same
centers
pg. 388
P
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
arc length
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
arc length:a fraction of a circle’s
circumference
pg. 389
P
A
B
length of AB =
mAB360 2 r
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
congruent arcs
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
congruent arcs:arcs that have the same measure
and are in the same circle or congruent circles
pg. 389
P
A
B
C
D
AB CD
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
sector of a circle
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
sector of a circle:a region bounded by an arc of a circle and the two radii to the
arc’s endpoints
pg. 396
P
A
B
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
segment of a circle
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Chris Giovanello, LBUSD Math Curriculum Office, 2011
segment of a circle:a part of a circle bounded by an arc and the segment joining its
endpoints
pg. 396
P
A
B