UIL Geometry Formulas
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22 Terms
Square A, Diagonal
Rectangle A, Diagonal
Equilateral Triangle Area
Rhombus Area
Trapezoid Area
Cylinder V, LSA, SA
Rectangular Prism V, SA
Triangular Prism V, LSA, SA
Cone V, LSA, SA
Square Pyramid V, LSA, SA
Cube V, LSA, SA, DIAGONAL
Sphere V, SA
Formula of for the RADIUS of an IN-CIRCLE
What is the radius of a CIRCUMCIRCLE?
Thale’s Theorem
What is the formula for a the RADIUS of a circle inside a SCALENE TRIANGLE
r=A/S
A= Area of Scalene Triangle ( Heron’s Formula)
S= semi-perimeter of scalene triangle (a+b+c / 2)
LAW OF SINES formula
a/sin(A) = b/sin(B) = c/sin(C)
LAW OF COSINES
c²=a²+b²-2abcos(x)
WHEN SHOULD THE LAW OF COSINES BE USED FOR SCALENE TRIANGLES?
SSS
ASS
What is the formula for a scalene triangle inside a circle?
abc/4A
Frustum V, LA, SA
