Similar Triangles

Front

Two objects that are the same shape but not the same size are _______.

Back

Similar

Front

How do these triangles appear to be similar?

Back

SSS (Side-Side-Side similarity criterion)

Front

If two figures are similar, the corresponding sides are ______________.

Back

Proportional

Front

The pair of figures is similar. Find the missing side: If one triangle has sides 3, 4, and 5, and the other has a side of 12, what is the missing side?

Back

16 (using the ratio of sides)

Front

The 2 shapes are similar. Find side length X: If one side is 10 and the corresponding side is 15, what is X if the corresponding side is 12?

Back

8 (using proportionality)

Front

What is the AA criterion for similarity?

Back

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

Front

What does SSS stand for in triangle similarity?

Back

Side-Side-Side; if the sides of two triangles are in proportion, the triangles are similar.

Front

What does SAS stand for in triangle similarity?

Back

Side-Angle-Side; if two sides of one triangle are proportional to two sides of another triangle and the included angles are equal, the triangles are similar.

Front

If triangle ABC is similar to triangle DEF, and the sides of ABC are 4, 6, and 8, what are the corresponding sides of DEF if the shortest side is 10?

Back

15 and 20 (using the ratio of similarity)

Front

If two triangles are similar, what can be said about their areas?

Back

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