Lines, Points, Rays, Line Segments

Front

What is a point?

Back

A point is a precise location or position in space, represented by a dot.

Front

What is a line?

Back

A line is straight and extends in both directions forever.

Front

What is a line segment?

Back

A line segment is a part of a line that has two endpoints.

Front

What is a ray?

Back

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

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never intersect and are always the same distance apart.

Front

What are acute angles?

Back

Angles that have a measure less than 90 degrees are called acute angles.

Front

What are obtuse angles?

Back

Angles that have a measure greater than 90 degrees but less than 180 degrees are called obtuse angles.

Front

What are right angles?

Back

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

Front

What is the difference between a line and a line segment?

Back

A line extends infinitely in both directions, while a line segment has two endpoints.

Front

What does it mean for lines to intersect?

Back

When two lines cross each other at a point, they are said to intersect.