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E M B I B E
MATHEMATICS
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Chapter 6 - Lines and Angles
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TEST YOURSELF
>
Q 6
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EASY
9th CBSE
IMPORTANT
Earn 100
Prove that the sum of the angles of triangle is
180
o
Important Questions on Lines and Angles
EASY
9th CBSE
IMPORTANT
MATHEMATICS
>
Chapter 6 - Lines and Angles
>
TEST YOURSELF
>
Q 7
If two parallel lines are intersected by a transversal then prove that the bisectors of any pairs of alternate interior angles are parallel.
MEDIUM
9th CBSE
IMPORTANT
MATHEMATICS
>
Chapter 6 - Lines and Angles
>
TEST YOURSELF
>
Q 8
In
∆
A
B
C
,
O
B
and
O
C
are bisectors of
∠
E
B
C
and
∠
F
C
B
which meet at point
O
. Prove that
∠
B
O
C
=
90
°
-
1
2
∠
B
A
C
.
