how do i establish a perpendicular in a geometric proof?

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how do i establish a perpendicular in a geometric proof?

2006-10-05 15:47:47 · 3 answers · asked by Uncle Gus 1 in Science & Mathematics ➔ Mathematics

3 answers

Well, if it's a coordinate proof, you could show that 2 lines have slopes which are opposite reciprocals. Another way would be to show that a triangle exists which fulfills the requirements of the Pythagorean Theorem --- then the 2 short sides are perpendicular.

2006-10-05 16:36:46 · answer #1 · answered by jenh42002 7 · 0⤊ 0⤋

you must show that the angle of incidence is 90 degrees.

2006-10-05 15:58:38 · answer #2 · answered by ali 6 · 0⤊ 0⤋

What are you trying to prove?

2006-10-05 16:33:05 · answer #3 · answered by Jerry M 3 · 0⤊ 0⤋