Geometry Basics: Points, Lines, and Angles

Front

What is a point?

Back

A point is an exact location in space. It has no size, only position.

Front

How do you describe a ray?

Back

A ray is a part of a line that starts at a point and extends infinitely in one direction.

Front

What is a line segment?

Back

A line segment is a part of a line that is bounded by two distinct end points.

Front

Define an angle.

Back

An angle is formed by two rays with the same endpoint. The common endpoint is called the vertex of the angle.

Front

What is a line?

Back

A line is a straight one-dimensional figure having no thickness and extending infinitely in both directions.

Front

What are intersecting lines?

Back

Intersecting lines are lines that cross each other at one point.

Front

Define parallel lines.

Back

Parallel lines are lines in a plane that do not meet; they are always the same distance apart.

Front

What are perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).