harshali maths
TRANSCRIPT
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HARSHALI.S.VINERKARRoll No: 66
Sub: MathematicsStd: 6th
Topic : POINT, LINE, PLANE
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The pupil states the definition of line and segment.The pupil identifies RAY, LINE, SEGMENT. The pupil classifies collinear and non collinear points.The pupil defines in his own words:
parallel linesintersecting linesconcurrent lines
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• The pupil illustrates his own examples of parallel lines. • The pupil illustrates his own
examples of intersecting lines.• The pupil classifies collinear and
non collinear points.• The pupil draws concurrent lines.
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POINTS• We can draw innumerable
lines passing through a single point.
• One and only one line passes through any two given points.
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POINTS When one and only one line can
be drawn passing through three or more points, the points are said to be “COLLINEAR POINTS”
When a single line cannot be drawn through three points, the points are said
to be “NON COLLINEAR POINTS”
A B C
vv
X Z
Y
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Evaluation
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True or false1) Points X, Y, Z are
collinear points.a)TRUEb)FALSE
2) Points A, X, Y are collinear points
a)TRUEb)FALSE
X Y Z
A B C
P Q R
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EXCELLENTEXCELLENT
KEEP GOING ON !!!KEEP GOING ON !!!
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OOOPS?????OOOPS?????
THINK AGAIN.THINK AGAIN.
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EXCELLENTEXCELLENT
KEEP GOING ON !!!KEEP GOING ON !!!
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PLANE• A PLANE is a flat surface
which extends in all directions without any limits.
• Lines in the same plane that do not intersect each other are called “PARALLEL LINES”
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• Line A and B meet in point O.
• Point O is called the point of intersection of line A and line B.
• Two intersecting lines have one and only one point of intersection.
A B
O
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Line M, line N and line A intersect each other at point O.
Thus, three lines intersect each other in one common point.
Their point of intersection point O is called the POINT OF CONCURRENCE.
Three or more than three lines intersecting in a single point are called CONCURRENT LINES.
M N
AO
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Evaluation
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1) Line AB and line PQ are __________________ lines.
a) Parallel-lines
b) Intersecting lines
2) Line WX and line XZ intersect at point __________________
a) Point D
b) Point B
W X
Y Z
A B
C D
A B
P Q
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EXCELLENTEXCELLENT
KEEP GOING KEEP GOING
ON !!!ON !!!
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OOOPS?????OOOPS?????THINK AGAIN.THINK AGAIN.
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EXCELLENTEXCELLENT KEEP GOING ON !!!KEEP GOING ON !!!
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1 ) Name the lines whose point of concurrence is point Q?
P Q
S R
Ans ) Line PQ, line QR, and line QS intersect at point.Thus, their point of concurrence is point Q.
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2) Which of the lines PQ, RS, PS and QS are concurrent?
P Q
S R
Ans) Line PS, line SR and line QS are concurrent lines.
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EXCELLENT !!!EXCELLENT !!!
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THANK YOU