Points, Lines, Planes

Front

What is a point in geometry?

Back

A point is a specific location in space that has no size, dimension, or shape.

Front

What is a line in geometry?

Back

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

Front

What is a plane in geometry?

Back

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

Front

What does it mean for points to be collinear?

Back

Collinear points are points that lie on the same straight line.

Front

What is the intersection of two lines?

Back

The intersection of two lines is the point where they meet or cross each other.

Front

How do you find the length of a segment between two points?

Back

To find the length of a segment between two points A and B, subtract the coordinates of A from B.

Front

What is an angle?

Back

An angle is formed by two rays (sides) that share a common endpoint (vertex).

Front

What is the sum of angles on a straight line?

Back

The sum of angles on a straight line is 180 degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is a vertical angle?

Back

Vertical angles are the angles opposite each other when two lines intersect, and they are always equal.