Question

Plz solve the question no 3 with proper working

Answer 1

Answer:

75°

Step-by-step explanation:

sum of adjacent interior angles= exterior angle

55 + x = 130

x = 130-55

x= 75°

For question number 3:

Let angles A , B and C be x, y and z respectively.

Given in the question,

2A = B

2*x = B

B = 2x

And now,

3B = C

3* 2x = C

C = 6x

As we know that , sum of all angles of an triangle equals 180° then,

A+B+C = 180 °

x + 2x + 6x = 180

9x = 180

x = 20°

Hope it will also help you