Fill in the blanks with acute,obtuse,right or straight:(d) when the sum of the measures two angles is that of a right angle,than each one of them is_______________.

Fill in the blanks with acute,obtuse,right or straight:(e) when the sum of the measures two angles is that of a straight angle and if one of them is acute then the other should be_______________.

Fill in the blanks with acute,obtuse,right or straight:(c)An angle whose measure is the sum of the measures of a right angle is_______________.

Fill in the blanks: If two angles are supplementary, then the sum of their measures is _________.

Fill in the blanks: If two angles are complementary, then the sum of their measures is __________.

Match the following : Measures of Triangle Type of Triangle (v) 1 right angle

Show that the diagonals of a square are equal and bisect each other at right angles.

Show that the diagonals of a square are equal and bisect each other at right angles.

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

If the sides of a right angled triangle are in A.P then the sines of the acute angles are

Show that if the diagonals of a quadrilateral bisect each other at right angles, then it is a rhombus.