ANGLES AT A POINT Angles formed by a number of rays having a common initial point are called angles at a point.

Two lines having a common point is called :

VERTICALIY OPPOSITE ANGLES Two angles formed by two intersecting lines having no common arm are called vertically opposite angles.

Angle an angle is a figure formed by two rays with the same initial point.

The figure formed by two rays with the same initial point is know as a ray (b) a line (c) an angle (d) a line segment

Find out the incorrect statement, if any, in the following An angle is formed when we have (a) two rays with a common end-point (b) two line segments with a common end - point (c ) a ray and a line segment with a common end - point

Construct an angle of 60^@ at the initial point of a given ray.

The number of common point in the two angles marked in Fig. 2.18 is ___________.

The number of common point in the two angles marked in Fig. 2.20 ______________