Q58 of 78 Page 23

If two rays intersect, will their point of intersection be the vertex ofan angle of which the rays are the two sides?

No, because angle is made when two rays intersect at common point. The common point is known as vertex of an angle.

In which of the following figures (Fig. 2.35),

(a) perpendicular bisector is shown?

(b) bisector is shown?

(d) only perpendicular is shown?

What is common in the following figures (i) and (ii) (Fig. 2.36.)?

Is Fig. 2.36 (i) that of triangle? if not, why?

In Fig. 2.37,

(a) name any four angles that appear to be acute angles.

(b) name any two angles that appear to be obtuse angles.

In Fig. 2.38,

(a) is AC + CB = AB?

(b) is AB + AC = CB?