a. since theres 2 lines on each side of the triangle that means 2 sides are equal. triangles are equal to 180 degrees so all u have to do is (74×2)-180 to find x
b. add the degrees up on each side then subtract by 180 to find missing side
c. since it states that each side is equidistant all u have to do is set the equations equal to each other which gives u x=4 then plug in 4 to each equation then add to find m<RST
