Identify all the quadrilaterals that have.

(a) Four sides of equal length

(b) Four right angles

Find the measure of and if in Fig 3.34.

(If you find is there more than one method to find ?)

State whether True or False

(a) All rectangles are squares

(b) All rhombuses are parallelograms

(c) All squares are rhombuses and also rectangles

(d) All squares are not parallelograms

(e) All kites are rhombuses

(f) All rhombuses are kites

(g) All parallelograms are trapeziums

(h) All squares are trapeziums

Explain how a square is

(i) a quadrilateral

(ii) a parallelogram
(iii) a rhombus

(iv) a rectangle

Name the quadrilaterals whose diagonals

(i) Bisect each other

(ii) Are perpendicular bisectors of each other

(iii) Are equal