Two straight lines are specified by y=a+cx and y=b+cx, respectively, where b≥a. What’s the distance d between them in terms of a, b and c?

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geometry puzzles

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- Post author By Rik D. Tangerman
- Post date February 9, 2022
- No Comments on Parallel universes

- Tags coordinates, length, line

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- Post author By Rik D. Tangerman
- Post date November 4, 2021
- No Comments on Below the line

Two squares share a vertex at the origin and have their sides along the x- and y-axis. Two vertices lie on the line satisfying x+2y=c. What is the proportion purple : yellow?

- Tags area, line, proportion, square

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- Post author By Rik D. Tangerman
- Post date August 3, 2021
- No Comments on Between the bars

Two parallel lines support two rectangles. Prove they have equal area.

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- Post author By Rik D. Tangerman
- Post date April 29, 2021
- 2 Comments on The fallen pine

Two congruent isosceles triangles and three lines. Prove triangle AEF is also isosceles.