Geometry Notes (Points, Lines, and Planes).

Point

An exact location in space, represented by a dot, with no length, width, or height.

Line

A straight one-dimensional figure that extends infinitely in both directions with no endpoints.

Angle

Formed when two rays meet at a common endpoint called the vertex, measured in degrees.

Collinear

Points that lie on the same straight line.

Plane

A flat two-dimensional surface that extends infinitely in all directions.

What defines a point in geometry?

A point is an exact location in space with no length, width, or height.

What is the characteristic of a line?

A line extends infinitely in both directions with no endpoints.

What is an angle?

An angle is formed when two rays meet at a common endpoint, measured in degrees.

What does it mean for points to be collinear?

Points are collinear if they lie on the same straight line.

How is a plane defined in geometry?

A plane is a flat surface that extends infinitely in all directions.

What type of angles exists in geometry?

Acute (less than 90°), right (exactly 90°), and obtuse (more than 90° but less than 180°).

What are parallel lines?

Lines that never meet.

What are perpendicular lines?

Lines that intersect at right angles.