Question

In the given figure, the bisectors of ∠ABC and ∠ BCA , intersect each other at point O.
o If ∠ BOC = 100 , the ∠ A is

oo o o (a) 30 (b) 20 (c) 40 (d) 50
2. What is common between the three angles of a triangle and a linear pair
(a) Angles are equal

o
(b) In both cases sum of angles is 180
(c) In triangle there are three angles and in linear pair there are two angles.
(d) None of these
3. In the given figure, ∠ 2 and ∠ 8 are known as
(a) exterior angles
(b) exterior angles on the same side of transversal
(c) alternate exterior angles
(d) interior angles

4. In the given figure, measure of ∠ QPR is

oo o o (a) 10.5 (b) 42 (c) 111 (d) 50
o 5. An angle is 120 more than three times the given angle. If the two angles are supplementary
the angles are _______________________.
6. In figure, if l || l , what is the value of 1 2 x

oo o o (a) 90 (b) 85 (c) 75 (d) 70

Answer 1

Answer:

1.(b)_20

2.(b)_in both cases sum is 180°

3.(c)_Alternate exterior angles

4.(b)_42

5.sum is 180°

6.(a)_90

Step-by-step explanation:

for 1st above img explaination

and others are easy to understand

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