The sum of the interior angles of a regular polygon is twice the sum of the exterior angles. Find the number of sides of the polygon

Three angles of the quadrilaterals are in the ratio 2:3:4. The sum of the least and the greatest of these three angles is equal to 180°. Find all the angles of the quadrilateral

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

One of the angle in the parallelogram is 80°. Find the other angles in the parallelogram

The angles of the quadrilateral is in the ratio 1:2:3:4. Find all the angles

One of the diagonals of a rhombus is equal to its sides. Find the measures of all the angles of the rhombus

In a parallelogram ABCD, the bisectors of ∠ A and ∠ B meet at O. Find ∠ AOB.

Find the value of x in the trapezium ABCD

The diagonals of a rhombus are 8 cm and 15 cm. Find its side.

Find the values of x and y in the following parallelogram.

**Notes****NCERT Solutions**

Class 8 Maths Class 8 Science