Unit6 Vocab Flashcard makeup

Front

What theorem states that if two angles of one triangle are congruent to two angles of another triangle, then the triangles are similar?

Back

Angle-Angle Triangle Similarity Theorem.

Front

True or False: The Triangle Midsegment Theorem states that the segment joining the midpoints of two sides of a triangle is parallel to the third side and half its length.

Back

True.

Front

If ΔABC is translated and dilated to ΔFDE, what relationship do ΔABC and ΔFDE have?

Back

They are similar.

Front

What is the term for a line segment from a vertex to the opposite side that is perpendicular to that side in a triangle?

Back

Altitude.

Front

If segment A'B' is parallel to segment AB, what is the relationship between their lengths?

Back

The lengths are proportional.

Front

What is the definition of congruent triangles?

Back

Triangles that are identical in shape and size.

Front

What does the Side-Angle-Side (SAS) Triangle Congruence Theorem state?

Back

If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent.

Front

What is the definition of similar triangles?

Back

Triangles that have the same shape but may have different sizes.

Front

What is the Triangle Proportionality Theorem?

Back

If a line is drawn parallel to one side of a triangle, it divides the other two sides proportionally.

Front

What is an altitude in a triangle?

Back

A perpendicular segment from a vertex to the line containing the opposite side.