If in a quadrilateral ABCD, ∠A = 120^o, ∠B = 60^o, ∠C = 100^o then ∠D =

If we join any two points on a circle through centre, we get a

A set of points which do not lie on the same line are called as: 

When two line segments meet at a point forming right angle they are said to be _________to each other. 

When two rays emerge from a common point __________ is formed. 

The angle between the two diagonals of a rhombus is: 

Number of measurements required to construct a square are

The radius of the circle with diameter 7cm is: 

At 5.20 the angle formed between the two hands of a clock is: 

The bisected angle of 90^o is: