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How do u find the missing value of angle a and angle b?? |
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Answer» -step EXPLANATION: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° |
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