Q45 of 160 Page 144

Two adjacent angles of a parallelogram are in the ratio 1:5. Then all the angles of the parallelogram are

Let the angles be x and 5x

The adjacent angles of a parallelogram are supplementary

x + 5x = 180⁰

6x = 180⁰

⇒ x = 30⁰

So the angles are 30°, 150°, 30°,150°

Which of the following is not true for an exterior angle of a regular polygon with n sides?

PQRS is a square. PR and SQ intersect at O. Then POQ is a

A parallelogram PQRS is constructed with sides QR = 6cm. PQ = 4cm and PQR = 90°. Then PQRS is a

The angles P, Q, R and S of a quadrilateral are in the ratio 1:3:7:9. Then PQRS is a