A straight angle = ________^o

  From ΔPQR calculate ∠QPR 

From ABC calculate ∠ABC, if ∠ACB = 60^o and ∠BAC = 40^o

If ∠POQ = 65o, ∠ROS = 70o, ∠QOR = 110o calculate ∠SOP

90^o angle is called _______

Find x

The figure,given below,show a pair of parallel lines cut by a transversal.Find 'a' and 'b' ?

A straight angle is an angle which is equal to _________

If a + b = 180^o then a and b are

The figure,given below,show a pair of parallel lines cut by a transversal.Find 'a' and 'b' ?