Question

hi friends help me out
no unnecessary answers please
Question no.4

Answer 1

In triangle SQR, q and r will be same bcoz isoceles triangles

so, let angle = a
amd, a +a + 70 = 180
2a + 70 = 180
2a = 110
a = 55 degree

Angle R and Q are of 55 degree

Now is bigger triangle PQR
P = 30 degree
a+a+30 = 180
2a + 30 = 180
2a = 150
a = 75

now, add angles of each sides
Angle Q = 75 + 55 = 125°
Angle R = 75 + 55 = 125°

CHECK - We know that sum of all angles in a triangle is 180

So, 125 + 125 + 30 = 180
180 = 180

Ans is correct