wish I could helpWhat are the measures of the angles located at positions a, b, & c? Note: the figure is symmetrical on the vertical through angle b. The large triangle is an isosceles triangle. The two angles on the base are equal.Angle a = 35° We now know two angles in the largest triangle. The third angle, angle b must add to these to make 180°. 35° + 35° + b = 180°b = 180° - 70°b = 110° We now know two angles in a quadrilateral. The two unknown angles, including angle c are equal. All four angles add up to 360°. 2c + 110° + 120° = 360°2c = 360° - 230°2c = 130°c = 65°
