1. A student inscribes quadrilateral ABCD inside a circle. The measures of angles A, B, and C are given below. Find the measure of each angle of quadrilateral ABCD. m2A=8x-4 m2B = 5x + 4 m2C=7x+4 2. A student inscribes an angle inside a semicircle to form a triangle. The measures of the angles that are not the vertex of the inscribed angle are x and 2x - 9. Find the measures of all three angles of the triangle. Explain how you got your answer.