Subject Experts Solutions for Chapter: Understanding Quadrilaterals, Exercise 2: Worksheet 2

In the given figure, find the sum of angles marked at the corners $P,Q,R,S$ and $T$ .

Each interior angle of a regular polygon lies between $136°$ and $142°$, then find the number of sides of the polygon.  

The exterior angle of a regular polygon is two-fifth of its interior angle. How many sides has the polygon? 

The polygon in which sum of all exterior angles is equal to the sum of interior angles, is called a triangle.  

If the interior angles of a triangle are in the ratio $1:2:3$, then the ratio of its exterior angles is $3:2:1$. 

If the interior angle of a regular polygon is $120°$, then the number of sides of the polygon is $6$.  

Two regular polygons are such that the ratio of the measures of their interior angles is $4:3$ and the ratio between their number of sides is $2:1$. The number of sides of polygons are $10$ and $6$.         

If the exterior angle of a polygon is one-fifth of its interior angle, then it is a polygon having $10$ sides.