How to construct (draw) one of the three altitudes of a triangle - Math Open Reference

This page shows how to construct one of the three altitudes of a triangle, using only a compass and straightedge or ruler. A Euclidean construction.

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The perimeter of a triangle is 200mm with an altitude of 70mm. How do you construct the triangle? - Quora

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Construct an Altitude of a Triangle (examples, solutions, worksheets, videos, games, activities)