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.

Printable instructions for finding the altitude of an acute triangle with compass and straightedge or ruler

How to draw an acute angle triangle with protractor. shsirclasses.

How to construct (draw) the orthocenter of a triangle- Math Open Reference

How to construct an altitude of an obtuse triangle

How to construct (draw) the orthocenter of a triangle- Math Open Reference

4 Ways to Construct an Isosceles Triangle - wikiHow

How to find two other vertices of a triangle from two altitudes and one vertex - Quora

Constructing the Angle Bisectors of a Triangle

How to construct an altitude to a triangle

What is the difference between a perpendicular bisector and altitude? - Quora

Construction of Altitude and Perpendicular Line given a point - 3 easy and fast steps.

calculations - Drawing the three altitudes of a triangle with TikZ; incorrect orthocenter - TeX - LaTeX Stack Exchange