More geometric constructions (7th grade math)

In this lesson, you will learn how to draw or construct
* a perpendicular line through a point on a line,
* an altitude to a triangle,
using compass and straightedge only. Both of these constructions are based on or similar to the equilateral triangle construction.

See also

Drawing Triangles

Math Mammoth Geometry 3 — a self-teaching worktext with explanations & exercises (grade 7)

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