4th Grade- Points, Lines, Line Segments, Rays, and Angles

Front

What is a ray?

Back

A part of a line that starts with an endpoint and goes on forever in the opposite direction.

Front

What type of angle is greater than 90 degrees but less than 180 degrees?

Back

Obtuse angle.

Front

What is the name of this ray if it starts at point A and goes through point B?

Back

Ray AB.

Front

What is a line?

Back

A straight set of points that goes on forever in both directions.

Front

What kind of lines are always the same distance apart and never meet?

Back

Parallel Lines.

Front

What kind of lines intersect to form a right angle?

Back

Perpendicular Lines.

Front

What is an acute angle?

Back

An angle that is less than 90 degrees.

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

What is a point in geometry?

Back

A location in space that has no size or dimension.

Front

What is a straight angle?

Back

An angle that measures exactly 180 degrees.