Understanding Angles and Triangles

Front

What does the symbol ⊥ represent in geometry?

Back

Perpendicular lines that intersect at a right angle.

Tags

CCSS.HSG.CO.A.1

CCSS.4.G.A.1

Front

What does the symbol ∠ represent?

Back

An angle.

Front

What is the SAS postulate in triangle congruence?

Back

Side-Angle-Side postulate states that if two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, then the triangles are congruent.

Tags

CCSS.HSG.SRT.B.5

Front

What does the measure of angle ABC represent?

Back

The size of angle ABC in degrees.

Tags

CCSS.HSG.CO.A.1

CCSS.4.MD.C.5B

Front

Write an equation that models the lengths shown: 2x + 20 + 9 = x + 21.

Back

This equation represents a relationship between the lengths of segments.

Tags

CCSS.4.MD.A.2

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Tags

CCSS.7.G.B.5

Front

What is the definition of a triangle?

Back

A polygon with three edges and three vertices.

Tags

CCSS.2.G.A.1

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.

Tags

CCSS.8.G.A.5

Front

What is the difference between parallel and perpendicular lines?

Back

Parallel lines never intersect, while perpendicular lines intersect at a right angle.

Tags

CCSS.HSG.CO.A.1

CCSS.4.G.A.1

Front

What is the AAS postulate in triangle congruence?

Back

Angle-Angle-Side postulate states that if two angles and a non-included side of one triangle are equal to two angles and the corresponding non-included side of another triangle, then the triangles are congruent.

Tags

CCSS.HSG.SRT.B.5