Points, lines, rays, and angles

Front

What is a point?

Back

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

Tags

CCSS.4.G.A.1

Front

What is a line?

Back

A line is a straight path that extends infinitely in both directions with no endpoints.

Tags

CCSS.4.G.A.1

Front

What is a line segment?

Back

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

Tags

CCSS.HSG.CO.A.1

Front

What is a ray?

Back

A ray is part of a line that has one endpoint and extends infinitely in one direction.

Tags

CCSS.4.G.A.1

Front

What is an angle?

Back

An angle is formed by two rays that share a common endpoint.

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 right angles?

Back

Right angles are angles that measure exactly 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 are straight angles?

Back

Straight angles are angles that measure exactly 180 degrees.

Tags

CCSS.4.G.A.1

Front

What does it mean for lines to be perpendicular?

Back

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

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1