2. Find the number of sides of a regular polygon if each interior angle measures
3The adjacent angles of a parallelogram are in the ratio 2:7. Find the angles
4The perimeter of a parallelogram is 50cm. One side is 1½ times the other ,find the length of sides of the parallelogram.
6How many diagonals are there in an octagon?
2. Find the number of sides of a regular polygon if each interior angle measures 144 degrees.
360 / (180 - 144) = 10
3. The adjacent angles of a parallelogram are in the ratio 2:7. Find the angles.
180 / 9 = 20 angles are 40º and 140º
4. The perimeter of a parallelogram is 50cm. One side is 1½ times the other, find the length of sides of the parallelogram.
the length of a side is 15cm
