Say True or False : (a) Each angle of a rectangle is a right angle.

Say True or False : (b) The opposite sides of a rectangle are equal in length.

Say True or False : (c) The measure of a reflex angle >180⁰.

Say True or False : (f) The opposite sides of a trapezium are parallel.

Say True or False : ( c ) The diagonals of a square are perpendicular to one another.

Say True or False : ( d) All the sides of a rhombus are of equal length.

Say True or False : (e) All the sides of a parallelogram are of equal length.

The angles of a triangle are in A.P. The smallest angle is 30^@ . Show that the triangle is a right angled triangle.

Say True or False : (d) The measure of one complete revolution = 360⁰.

Let ‘O’ be the centre of a circle, PQ is a diameter, then prove that angle PRQ = 90^@ (OR) Prove that angle in a semi-circle is right angle.

State whether the statements are True or False. (vi) All parallelograms are rectangles