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Geometry formulas

QuestionAnswer
geometric mean √axb
theorem one altitude from the right angle splits the triangle into 2 similar triangles, both similar to the original triangle
theorem two word def. altitude is the geometric mean between the two peices of hypotenuse
theorem two formula peice of hyp/altitude=altitude/other peice of hypotenuse
theorem three word def. the leg of the triangle is the geometric mean between the whole hypotenuse and the adjacent peice
theorem three formula full hypotenuse/leg=leg/adjacent peice
60,30 tri. hypotenuse 2x
60,30 tri. long leg x√3
60,30 tri. short leg x
45,45 tri. hypotenuse x√2
45,45 tri. legs x & x
SIN opposite, hypotenuse
COS adjacent, hypotenuse
TAN opposite, adjacent
Created by: calliethecat
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