Perpendicular lines are drawn by fitting the hypothenuse of the triangle to the T-square at an angle, or another triangle. Then, turn the triangle so that the hypothenuse is perpendicular to the line.
4 Ways to Draw Perpendicular Lines in Geometry - wikiHow Life
Keyword: T-square
Drawing Perpendicular Lines Using Square Triangle Hypothenuse
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Drawing Perpendicular Lines Using Square Triangle Hypothenuse
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