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Basic Mathematics MCQs
Angles
Q
The angles of a triangle are in the ratio 2:7:11. The angles are:
AA. 20° , 70° , 90°
BB. 20° , 70° , 110°
CC. 18° , 63° , 99°
DD. 23° , 54° , 110°
Correct Answer:
B. B. 20° , 70° , 110°
Explanation:
Sum of angles in a triangle = 180°. Sum of ratios = 20. First angle = 2 × 180 / 20 = 18°. Second angle = 7 × 180 / 20 = 63°. Third angle = 11 × 180 / 20 = 99°.