Question

111°,Measure of one angle of linear pair is given. Find the measure of another angle.

Answer 1

For Linear pair

The Sum of two angles = 180°

so X + Y = 180°

Given Angle = X = 111°

so

111° + Y = 180°

Y = 180° - 111°

Y = 69°

So. other angle of the Linear pair is 69°

Answer 2

Solution :

**************************************

A pair of adjacent angles are

said to be a linear pair of angles

if their sum is 180° .

**************************************

Here ,

one angle ( x ) = 111°

Let Second angle = y

x + y = 180°

=> y = 180° - x

=> y = 180° - 111°

=> y = 69°

Therefore ,

Required measure of another angle

is 69°

••••