Question

Which term can be used to describe the relationship between <A and <B

A.Complementary
B.Supplementary
C.Vertical
D.Acute

(look at the picture)
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Answer 1

Option A

Explanation:

Given :-

• A line is given which has three angles a , b and 90° .

We need to find the relationship between a and b. Also we know that the measure of angle of straight line is 180 ° .

According to Question :-

`:\implies` a + b + 90° = 180°

`:\implies` a + b = 180° - 90°

`:\implies` a + b = 90°

Hence the angles a and b are complementary.

Answer 2

D. Acute

Explanation:

Acute because both <A and <B are less then 90 degrees

Hope this helps :).