Geometry

Alternate interior angles are the angles formed when a transversal intersects two parallel or non-parallel lines. These angles are located ... Read more

Before we start with the corresponding angles directly, we have to do a brief review of the angles, the parallel ... Read more

Complementary angles are defined with respect to the sum of two angles. We have a pair of complementary angles when ... Read more

Supplementary angles are a pair of angles, which when added measure 180 degrees. For example, the angles 140° and 40° ... Read more

A circle is a curve in the plane that consists of all points that have the same distance from a ... Read more

The radius of a circle is equal to the distance from the center of the circle to any point on ... Read more

The circumference of a circle defines the length of the contour of the circle. The circumference is also referred to ... Read more

The area of a circle is the region occupied by the circle in the two-dimensional plane. We can easily determine ... Read more

Octagons are polygons that have eight sides and eight interior angles. The total sum of the interior angles in an ... Read more

The apothem of any polygon is equal to the line that connects the center of the polygon with one of ... Read more