LINES AND ANGLES | ANGLES, MEASURE OF AN ANGLE | Angle, Interior of an angle,

Interior adjacent angles

Interior opposite angles

Sum of interior angles of polygon

Equation OF line in determinant form || Angle between two lines ||Angle OF interior angle OF triangle||Determinant law and illustration

Define the following terms : (i) Angle (ii) Interior of an angle (iii) Obtuse angle (iv) Reflex angle (v) Complementary angles (vi) Supplementary angles

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.

Some of the interior angle of the polygon is

In fig .35,/_CBX is an exterior angle of ABC at B .Name The interior adjacent angle The interior opposite angles to exterior /_CBX Also,name the interior opposite angles to an exterior angle at A.

In a Delta ABC , angle bisector of interior angle B and exterior angle C intersect at P . If angle A=70^(@) . Find angle BPC .