2 times of a right angle is

In Δ ABC, ∠A = 35^o, ∠B = 60^o, Find ∠C?

1/2 of a right angle is

The shape of an instrument box is ______.

In a right angled triangle ΔABC, ∠A = 60^o find the other two angles?

1/3 of a right angle is

Degree measure of an acute angle is _______.

Two pairs of adjacent sides are equal for _______.

Sum of angles of a triangle is  ______.

Opposite angles of a parallelogram are ______.