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    Exercise 5.7

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6th class > > Exercise 5.7

Exercise 5.7

1. Say True or False

Each angle of a rectangle is a right angle.
The opposite sides of a rectangle are equal in length.
The diagonals of a square are perpendicular to one another.
All the sides of a rhombus are of equal length.
All the sides of a parallelogram are of equal length.
The opposite sides of a trapezium are parallel.
True
False
2. Give reasons for the following :

(a) A square can be thought of as a special rectangle. (b) A rectangle can be thought of as a special parallelogram. (c) A square can be thought of as a special rhombus. (d) Squares, rectangles, parallelograms are all quadrilaterals. (e) Square is also a parallelogram.

 3.A figure is said to be regular if its sides are equal in length and angles are equal in measure. Can you identify the regular quadrilateral?

A regular figure that has its sides equal in length and angles equal in the measure is a .