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Math
Geometry
Congruence and Triangles
Special Lines and Symmetry
Altitudes and Perpendiculars
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Explanations
1
Examples: Perpendiculars and Altitudes Perpendicular One line is perpendicular to another line when the angle between them is 90 degrees. In the image above, the angle between l…
By Christine, Caroline K
Problems
4
Which of the following segments is an altitude?
Which line segment is an altitude?
Are all the altitudes in a triangle perpendicular to the sides of the triangle (or the extension of the sides)?
Which line(s) are altitude(s) of △ABC\triangle ABC△ABC?
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