Question

how to slove it explain step by step

Answer 1

Answer:

Sum of the angles =180

so, x-1 +x+1+x=180

3x=180

x=60

Measure of angle 1=59

Measure of angle 2=60

Measure of angle 3=61

Answer 2

we can see that P,O and Q form a straight line
therefore,
x-1 + x + x+1 = 180°
3x = 180°
x = 180°/3
x = 60

therefore the required angles are
x-1 = 60-1 = 59°
x = 60°
x+1 = 60 +1 = 61°