Ratios/Similarity/Triangle/Parallel Line Proportionality Refresh

Front

What is Side Side Side (SSS) Similarity?

Back

If three sides of one triangle are proportional to three sides of another triangle, then the triangles are similar.

Front

What is Angle Angle (AA) Similarity?

Back

If two angles of one triangle are equal to two angles of another triangle, then the triangles are similar.

Front

What is Side Angle Side (SAS) Similarity?

Back

If two sides of one triangle are proportional to two sides of another triangle and the included angles are equal, then the triangles are similar.

Front

What is the similarity statement for triangles ΔXYZ and ΔNEW?

Back

ΔYZX~ΔNWE

Front

What does it mean for triangles to be similar?

Back

Triangles are similar if their corresponding angles are equal and their corresponding sides are in proportion.

Front

How can you determine if two triangles are not similar?

Back

If the angles are not equal or the sides are not in proportion, the triangles are not similar.

Front

What is the relationship between parallel lines and proportional segments?

Back

When a set of parallel lines intersects two transversals, the segments created on the transversals are proportional.

Front

If two triangles have one angle congruent and the sides around that angle are proportional, what similarity can be applied?

Back

Side Angle Side (SAS) Similarity.

Front

What is the formula for finding the ratio of the areas of two similar triangles?

Back

The ratio of the areas is equal to the square of the ratio of their corresponding sides.

Front

If triangle ABC is similar to triangle DEF, what can be said about their corresponding angles?

Back

Angle A = Angle D, Angle B = Angle E, Angle C = Angle F.