Build a quadrilateral ADEF with vertices A (2; 1), D (2; 6), E (7; 6), F (11; 1) find its area.

univerkov | July 13, 2021 | education

1) Since this is a rectangular trapezoid (there is an angle that is 90 degrees), then we will use the formula to find this trapezoid: S = ((BE + AF) / 2) * H (H is the height, this is the red segment in the figure)

2) We find: S = ((9 + 5) / 2) * 5 = 35 cm2

Answer: 35 cm2

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