Honors Geometry Lesson Four

a straight set of points that extends infinitely in both directions

a subset of a line consisting of all the points on a given side of a point on the line

Every point on the line divides the line into three distinct parts: a point and two half-lines.

the union of a half-line and its origin

two rays that have a common endpoint and form a straight line

consists of two endpoints and have a finite amount of points

Every line in a plane divides the plane into three distinct parts: the line and two half-planes

a subset of a plane consisting of all points on a given side of a line in the plane

The line that separates the plane into two half-planes.

two half planes within a plane separated by a common edge

union of two distinct rays with a common endpoint

the two rays forming an angle

The common endpoint of an angle (shared by two rays)

everything inside the angle

everything outside the angle