Triangle Proofs (1B)

Front

What are Alternate Interior Angles?

Back

Angles that lie between two parallel lines and on opposite sides of a transversal.

Tags

CCSS.8.G.A.5

Front

What is the Reflexive Property?

Back

A property stating that any quantity is equal to itself, often used in proofs.

Front

What does ∡EDA≅∡DCB signify?

Back

It indicates that angle EDA is congruent to angle DCB.

Tags

CCSS.8.G.A.2

Front

What is the first statement in the reason column of a proof?

Back

Given.

Front

What does ∠BCA≅∠DCE indicate?

Back

It shows that angle BCA is congruent to angle DCE.

Tags

CCSS.8.G.A.2

Front

What are Vertical Angles?

Back

Angles that are opposite each other when two lines intersect; they are always congruent.

Tags

CCSS.7.G.B.5

Front

What is an Angle Bisector?

Back

A line or ray that divides an angle into two equal parts.

Tags

CCSS.HSG.CO.C.9

Front

What is the definition of a Segment Bisector?

Back

A line, ray, or segment that divides another segment into two equal parts.

Tags

CCSS.HSG.CO.A.1

Front

What is the purpose of a proof in geometry?

Back

To provide a logical argument that demonstrates the truth of a geometric statement.

Tags

CCSS.HSG.CO.B.7

Front

What does it mean for two angles to be congruent?

Back

It means they have the same measure.

Tags

CCSS.8.G.A.2