By using Pythagoras' theorem.
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By using Pythagoras' theorem.
Multiply the altitude by [ 2 / sqrt(3) ] to get the length of the side.[ 2 / sqrt(3) ] is about 1.1547 (rounded)
If you are given the length of 1 leg, L, and the altitude, A, the length of the base is the 2x square root of (L2 -A2 )
If 2 sides are known then use Pythagoras' theorem to find the 3rd side of a right angle triangle.
The altitude of a triangle is the distance from the line containing the base to the vertex. Draw the base and continue on outside of the triangle. Measure perpendicular from that line to the vertex.