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A line is an altitude of a triangle if, and only if, it is perpendicular from a vertex of a triangle to the line that contains the opposite side. True or False​

Sagot :

In geometry, an altitude of a triangle is a line segment through a vertex and perpendicular to (i.e., forming a right angle with) a line containing the base (the side opposite the vertex). This line containing the opposite side is called the extended base of the altitude.

so It's TRUE