Question

In a triangle ABC, angle A is larger than angle C and smaller than angle B by the same amount. If angle B is 70°. what is the value of angle A:

• A. 60°
• B. 53°
• C. 58°
• D. 70°

Answer 1

Answer:

A. 60°

B>A>C B = 70° A+ C = 180 -70 = 110° C = 110 - A B- A = A- C 2A = B + C 2A = 70 + 110 - A 3A = 180 A = 60°