jeopardy
DESCRIPTION
Jeopardy. Choose a category. You will be given the answer. You must give the correct question. Click to begin. Choose a point value. Choose a point value. Click here for Final Jeopardy. Find the Missing Angle. Parallel Lines & Transversal Lines. Triangles. Polygons. - PowerPoint PPT PresentationTRANSCRIPT
Choose a category. You will be given the answer.
You must give the correct question. Click to begin.
Click here for Final Jeopardy
Parallel Lines & Transversal
LinesPolygons Vocabulary
10 Point
20 Points
30 Points
40 Points
50 Points
10 Point 10 Point 10 Point 10 Point
20 Points 20 Points 20 Points 20 Points
30 Points
40 Points
50 Points
30 Points 30 Points 30 Points
40 Points 40 Points 40 Points
50 Points 50 Points 50 Points
TrianglesFind the Missing
Angle
Below is a triangle with a missing angle. Find the
missing angle:
30 °
Missing
Angle
Given angles:
90 ° + 30 ° = 120 °
All angles in a triangle add up to 180 °
180 ° - 120 ° = 60°
60° = Missing Angle
Below is a quadrilateral.
Find the 2 (a & b) missing angles:
60°120°
a b
All quadrilaterals have an angle sum of 360 °.
Therefore, a = 60 ° and
b = 120 °. These angles are equal to the opposite angle.
60 + 60 + 120 + 120 = 360 °
Find the missing angles for the regular polygon
below.
Angle sum = 1,080°
Since this is a regular polygon, we know that all angles and sides are equal. Since this is an OCTAGON = 8 sided figure, we can easily find the missing angle. Therefore, you
take
1,080 ° / 8 = 135 °
Each angle of the octagon = 135 °
Find the exterior angles (a, b, and c) of the triangle
below.
30 °
60°
a
b
c
By looking at the triangle, we know that the interior angle + the
exterior angle = 180 °
(straight line)
180 ° - 90 ° = 90 ° = a
180 ° - 60 ° = 120 ° = b
180 ° - 30 ° = 150 ° = c
Find the missing angle (x) in the quadrilateral.
93
70
135X
All interior angles in a quadrilateral add up to
360.
93 + 70 + 135 = 298
360 - 298 =
62 = X
Define Parallel Lines
Parallel Lines: Lines in a plane that never meet. The opposite sides of a regular
hexagon are parallel.
Define Transversal Line
Transversal Line: A line that intersects two or more
lines.
Find the missing angles.
120
120
120
60
60
20
6090
90+ 60 = 150
180-150 = 30
30
Draw and define right triangle.
Right Triangle: A triangle with one
right angle and two acute angles.
Define and draw a Isosceles Triangle.
Isosceles Triangle: a triangle with two
sides the same length.
Draw and define what an equilateral
triangle is.
Equilateral Triangle: a triangle with all three sides
the same length.
Draw and define a Scalene Triangle.
Scalene Triangle: A triangle with no side lengths equal.
How much do all the interior angles ALWAYS add up to in a triangle?
All interior angles in a triangle add
up to 180.
I am a polygon with 5 sides. Who
am I?
I am a Pentagon!
If you take all of my interior angles and add
them together you get 720. What polygon am I?
I am a Hexagon - 6 sided figure.
I am a regular nonagon (9-sided figure). All of angles are 140. What is the angle
sum for my shape?
9 x 140 = 1,260
How could you find out what the angle sum for a pentagon is without using a
protractor?
Starting from the triangle, the angle sum increases by
180 with each addition side.
Fill in the missing parts of the chart.
Polygon # of sides Measure of an Angle
Angle Sum
Triangle 3 60 180
Square
Pentagon
Question 5dPolygon # of sides Measure of an
AngleAngle Sum
Triangle 3 60 180
Square 4 90 360
Pentagon 5 108 540
Define and draw an Obtuse Angle.
Obtuse Angle: An angle whose measure is greater than
90 and less then 180
Define and draw an acute angle.
Acute Angle: an angle whose
measure is less than 90
Define and draw a parallelogram.
Parallelogram: a quadrilateral with opposite sides parallel. Both pairs of
opposite angles are all equal.
What word goes with this definition?
A polygon that has all of its sides equal
and all of its angles equal.
The hexagon below is regular,
but the pentagon is not regular,
because its sides and its angles
are not equal.
Regular Polygon
What are the 2 types of
symmetry? Draw pictures.
Rotational Symmetry: a shape has rotation symmetry
if it can be rotated less than a full turn about its center
point to a position where it looks exactly as it did before
it was rotated.
Reflection Symmetry: a shape with reflection symmetry
has two halves that are mirror images of each other.
Make your wager
EXIT TICKET: Look at the set of shapes. List 2 ways you could separate the shapes into groups. Describe how you decided to separate them.
A B
D
H I
G
J
EF
K
C
Final Question