Suppose that △ xyz is isosceles with base yz . suppose also that = m ∠ x + 2 x 52 ° and = m ∠ y + 4 x 34 ° . find the degree measure of each angle in the triangle.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.