Unit 6 Triangle Proofs

Front

What is the definition of a triangle?

Back

A triangle is a polygon with three edges and three vertices.

Front

What does it mean for triangles to be congruent?

Back

Triangles are congruent if they have the same size and shape, meaning all corresponding sides and angles are equal.

Front

What is the Reflexive Property?

Back

The Reflexive Property states that any geometric figure is congruent to itself, e.g., AB ≌ AB.

Front

What is the purpose of CPCTC in triangle proofs?

Back

CPCTC stands for Corresponding Parts of Congruent Triangles are Congruent, and it is used to prove that corresponding parts of congruent triangles are equal.

Front

What is the definition of a midpoint?

Back

A midpoint is a point that divides a segment into two equal parts.

Front

What is the Segment Bisector?

Back

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

Front

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

Back

The first statement is always 'Given'.

Front

What does the term 'corresponding angles' refer to?

Back

Corresponding angles are angles that are in the same position on different parallel lines cut by a transversal.

Front

What is the definition of an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length.

Front

What is the definition of an equilateral triangle?

Back

An equilateral triangle is a triangle in which all three sides are of equal length.