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formule de géométrie
Geometry Formulas
Question | Answer |
---|---|
Parallelogram Rectangle Square | bh |
Rhombus | 1/2 (d1)(d2) |
Triangle | 1/2 bh |
Triangle when given all three sides | S=(a+b+c)/2 A=square root of (S)(S-a)(S-b)(S-c) |
Triangle-with SAS | 1/2 (S1)(S2)(sin<) |
Finding <'s of a triangle | put in degree use 2nd |
Finding legs of a triangle | put in degree |
30:60:90 | x:xtimes sq rt of 3:2x |
45:45:90 | x:x:x times sq rt of 2 |
Kites | 1/2 (d1)(d2) |
Regular Polygon | 1/2 ap |
Cirlce-area | pi r^2 |
Circle-circumference | 2(pi)(r) |
Arc length | m<A/360 times Circumference |
Area of a sector | m<a/360 times area of a circle |
Segment of a Circle | m<A/360 times are of a circle - triangle formula |