Lines

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.

Tags

CCSS.4.G.A.1

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.

Tags

CCSS.4.G.A.1

Front

What is a ray?

Back

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

Tags

CCSS.4.G.A.1

Front

What are parallel lines?

Back

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

Tags

CCSS.HSG.CO.A.1

Front

What are intersecting lines?

Back

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

Tags

CCSS.HSG.CO.A.1

Front

What are perpendicular lines?

Back

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

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

What is a transversal?

Back

A transversal is a line that crosses two or more other lines in the same plane.

Front

What are acute angles?

Back

Acute angles are angles that measure less than 90 degrees.

Tags

CCSS.4.G.A.1

Front

What are obtuse angles?

Back

Obtuse angles are angles that measure more than 90 degrees but less than 180 degrees.

Tags

CCSS.4.G.A.1

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Tags

CCSS.4.G.A.1