An illustration showing the construction used to divide an angle into two equal parts. "With C as a…

An illustration showing the construction used to divide an angle into two equal parts when the lines…

Illustration of a circle which illustrates that the tangents to a circle drawn from an external point…

Illustration used to show how to construct an angle equal to a given angle when given a vertex and a…

An illustration showing the construction used to erect an equal angle. "With D as a center, draw the…