Lines, Angles, & Triangles

Front

What is an obtuse triangle?

Back

A triangle that has one obtuse angle.

Tags

CCSS.4.G.A.2

Front

What is a line segment?

Back

A part of a line that has 2 endpoints.

Tags

CCSS.HSG.CO.A.1

Front

What are perpendicular lines?

Back

Lines that cross at a 90 degree angle.

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

What are intersecting lines?

Back

Lines that cross at any angle.

Tags

CCSS.HSG.CO.A.1

Front

What is a right triangle?

Back

A triangle that has one 90 degree right angle.

Tags

CCSS.4.G.A.2

Front

What is an acute angle?

Back

An angle that is less than 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is a straight angle?

Back

An angle that is exactly 180 degrees.

Tags

CCSS.4.G.A.1

Front

What is a triangle?

Back

A polygon with three sides and three angles.

Tags

CCSS.2.G.A.1

Front

What are parallel lines?

Back

Lines that never cross and are always the same distance apart.

Tags

CCSS.HSG.CO.A.1

Front

What is a vertex in a triangle?

Back

A point where two sides of a triangle meet.