Question

1. Calculate the angles marked with small letters
in the diagrams drawn . Please explain .​​

Answer 1

Answer:

b=30, a=60

Step-by-step explanation:

Let that middle point be O (Where the angle 120 degree is marked)

Angle OSR = Angle SRO = b (Since, line RO and SO are equal as it's a rectangle)

Angle SOR=Angle POQ=120 (Vertical opposite angles)

So, b + b + 120 = 180 (Angle sum property)

Therefore, b=30

Now, a + b = 90 (It's a rectangle so Angle SRQ=90)

Therefore, a=60