Chhattisgarh Board Solutions for Chapter: Polygon, Exercise 10: EXERCISE 10.2

Three angles of a quadrilateral are $80°, 110°$and $120°$respectively. Determine the fourth angle.

If three angles of any quadrilateral are equal and fourth angle is $75°$ then determine the measure of each of the three equal angles.

Ratio of the adjacent angles of a parallelogram is $2 : 3$. Determine the measure of each angle.

One angle of a quadrilateral is a right angle and remaining (three) angle are in the ratio of $2 : 3 : 4$ determine the measure of each of them.

Angles of a quadrilateral are in the ratio of $1 : 2 : 3 : 4$, determine the measures of all the angles.

Adjacent angles of a parallelogram are $\mathrm{x}°$ and $(x+20)°$ then determine the measure of each angle.