Question

When the sum of two adjacent angles is 180°. then they are called a
(a) vertically opposite angles
(b) linear pair of angles
(c) alternate angles
(d) corresponding angles​

Answer 1

linear pair angles

This is the answer of this question

I hope this will help you

Answer 2

answer of this question is (b) linear pair .

Answer of the question in attachment

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Let the angles in the ratio be a = 3x and b = 2x

so , a + b = 90° ( as shown in the figure )

we can say that ,

2x + 3x = 90°

5x = 90°

x = 90°/5

x = 18°

so , from the value of x ,

2x = 2*18

= 36°

3x = 3*18

= 54°

a + b = 90°

(a + b) + c = 180° ( linear pair angles )

90° + c = 180°

c = 180° - 90°

c = 90°

Hope it helped u .