The vertex of an angle lies (a)in its interior           (b) in its exterior    (c)on the angle            (d)  inside the angle

Which of the following statements are true: The vertex of an angle lies in its interior.The vertex of an angle lies in its exterior The vertex of an angle lies on it.

The exterior angle of a triangle is 110^(@) and one of its interior angle is 30^(@) find other angles

An exterior angle of a triangle measure 110^(@) and its interior oposite angles are in the rato 2:3 .Find the angles of the triangle.

Exterior angle of a triangle is always ____ then either of its interior opposite angles .

The ratio of the measure of an angle of a regular nonagon to the measure of its exterior angle is :

If an exterior angle of a triangle is 115^(@ and interior opposite angles are in the ratio 2:3 find the angles of the triangle.

Look at Fig. 2.34. Mark a point (a) A which is in the interior of both angle1 and angle2 . (b) B which is in the interior of only angle1 . (c ) Point C in the interior of angle1 . Now, state whether points B and C lie in the interior of angle2 also.

In the adjoining figure,name all the interior and exterior angles of the triangle

27.Prove that an exterior angle of a triangle is equal to the sum of its interior opposite angles.