Given a trapezoid ABCD. angle A = 60, angle B = 120, angle D = 70. Find the angle C
| August 8, 2021 | education
A trapezoid is a quadrangle with two parallel sides.
The corners adjacent to the sides are one-sided corners.
The sum of one-sided angles for parallel lines and a secant is 180 °.
At the trapezium, the bases are parallel straight lines, and the lateral sides are secant.
Therefore, <A + <B = <C + <D = 180 °.
<C + 70 ° = 180 °.
<C = 180 ° – 70 ° = 110 °.
Answer: 110 °.
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