NCERT Solutions for Chapter: Understanding Quadrilaterals, Exercise 1: Exercise

The floor of a house can be made by laying wooden planks parallel to one another. Anuj uses planks of length and width $150 \mathrm{cm}$ and $30 \mathrm{cm}$, respectively, for making the floor of his house.

The floor of his study is rectangular, $4.5 \mathrm{m}$ long and $3 \mathrm{m}$ wide. What is the minimum number of planks required to cover its floor?

Anuj lays a wooden floor for a kite-shaped room. He places the strips such that they are perpendicular to the longest side of the room vertically. One strip is shown in the figure.

What is the approximate length (in $\mathrm{m}$) of the strip in the figure?

Vanita folds a rectangular sheet. The folded sheet is shown below.

What is the length of the sheet?

Find the measure of $\angle ADC$.

In the given rectangle find the value of $x$ and $y$.

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

In the following trapezium, find the value of x.

In the figure above, $ABCD$ is a parallelogram, and if $AC=30 \mathrm{cm} \mathrm{and} BD=20 \mathrm{cm}$, $CP+DP=k \mathrm{cm}$, find $k$.