Jharne De and Ranjana Kumar Solutions for Chapter: Quadrilaterals, Exercise 1: Mental Maths

Find the measure of each angle of a quadrilateral if all its angles are of the same measure. What kind of quadrilateral is it?

Three angles of a quadrilateral are $130°, 88°,$ and $67°$. Find the fourth angle.

Look at the figure and mark the acute angle as $a$, obtuse angle as $b$, and right angle as $c$. How many right angles are there in this figure?

Mark the figures which are quadrilaterals:

The number of exterior angles are _____ to the number of sides of a regular polygon. (double/ equivalent)

A quadrilateral that has exactly one pair of opposite sides parallel is called a _____.

A rhombus is a _____ with all the sides equal.

The sum of exterior angles of a quadrilateral is equal to _____.