Question

if outer angle is 20 more than thrice the inner angle what is ithe measure of inner angle

some one plzz help me​

Answer 1

Answer:

calculate it three times of 2o more than inner angle u will get answer

Answer 2

The measure of inner angle = 40°

Given :

Outer angle is 20° more than thrice the inner angle

To find :

The measure of inner angle

Solution :

Step 1 of 2 :

Form the equation

Let inner angle = x

Outer angle = 3x + 20°

So by the given condition

3x + 20° + x = 180°

Step 2 of 2 :

Find measure of inner angle

3x + 20° + x = 180°

⇒ 4x + 20° = 180°

⇒ 4x = 160°

⇒ x = 40°

Hence measure of inner angle = 40°

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