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Geometry Formulas
Term | Definition |
---|---|
Slope Formula | Rise/Run or (y2 - y1) / (x2 - x1) |
Parallel Lines | Same slope |
Perpendicular Lines | Negative reciprocal slopes |
Midpoint Formula | (x1 + x2 / 2 , y1 + y2 / 2) |
Converse | Switch |
Inverse | Negative |
Contrapositive | Both (Switched and negative) |
What does TAN from SOHCAHTOA equal? | OPP / ADJ |
What does SIN from SOHCAHTOA equal? | OPP / HYP |
What does COS from SOHCAHTOA equal? | ADJ / HYP |
Distance Formula | d = √ (x2 - x1 )2 + (y2 - y1)2 |
Sum of all interior angles | (n - 2)180 |
Sum of all exterior angles | 360 |
Each interior angle | (n - 2)180n |
Each exterior angle | 360 / # of sides |