Question | Answer |
Leg is the geometric mean of... | part of the hypotenuse next to it and whole hypotenuse. |
Altitude is the geometric mean of... | part of the hypotenuse and the other part. |
a^2 + b^2 < c^2 | Obtuse |
a^2 + b^2 > c^2 | Acute |
In a 45/45/90 triangle, the hypotenuse is____ times the legs. | Radical 2 |
In 30/60/90 triangle..... | Hypotenuse is 2 times the shortest leg and the longest leg is radical 3 times short leg. |
Secant | Line that goes through the circle hitting two points. (Extends from outside circle) |
Inscribed angle is ____of the central angle. | 1/2 |
Quadrilateral can be inscribed in circle if its opposite angles are ______ | Supplementary (add to 180) |
Area of Parallelogram | B x H |
Area of Quadrilateral | L x W |
Area of Triangle | BH/2 |
Area of Trapezoid | H(b1+b2)/2 |
Area of Kite | D1*D2/2 |
Area of Regular Polygon | a*P/2 |
Circumference | C=2*pi*r |
Length of an Arc | 2 * pi * r * x/360 |
Area of Equilateral Triangle | Radical 3 * side^2 /4 |
Area of Circle | Pi*r^2 |
Area of Sector | Pi * r^2 * x/360 |
Area of Chord | Area of Sector - Area of Triangle |
Convex is.... | Normal Polygon |
Non-Convex is... | Polygon that caves inward |
Finding faces, edges, and vertices | F + V = E + 2 |
Prism has... | Two congruent and parallel faces |
Area of Cylinder | pi*r^2 + 2*pi*r*h + pi*r^2 |
Marco.... | likes men. |
Surface Area of Pyramid | Area of pyramid base + (triangle side base * slant height)/2 * number of triangle sides of pyramid |
Prism... | 8=======D~~~~ |
Volume of Prism | Area of base * h |
Volume of Cylinder | Pi*r^2*h |
Volume of Pyramid | (Area of base * h)/3 |
Volume of Cone | (Pi * r^2 * h)/3 |
Surface Area of Cone | Pi*r^2 + Pi*r*slant height |
2 Secants intersect going through circle | Big Arc + small arc / 2 |
Secant intersects tangent | Big Arc - small arc |
2 Tangents intersect on exterior of circle | Big arc + small arc / 2 |