Wednesday, April 4, 2012


Exterior Angle Theorem

The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles of the triangle.

Area of Square Pyramid
Surface Area = a2  +  2 × a × l  Where a is the base edge and l is the slant height.

Central Angle Theorem

The measure of an inscribed angle for a circle is one half the measure of the corresponding central angle.

Sum of the Angles in a Triangle
The angles of a triangle always sum to 180 degrees.