Geometry classes, Problem 233. Parallelogram, Exterior line, Perpendicular lines. Elearning.

Problem 233. Parallelogram, Exterior line, Perpendicular lines

The figure shows a parallelogram ABCD, A'C' is an exterior line. If a, b, c, and d are the perpendiculars drawn from A, B, C, and D to the line A'C', respectively, prove that: a + c = b + d. Post a comment.

Problem 233: Parallelogram, Perpendicular lines

See also:

Parallelogram
Trapezoid
Congruence

Elearn 232: Parallelogram