Similar Triangles { Finding Missing side / Angle}

Front

Which is NOT true about similar triangles?

Back

The triangles must have at least one side that is the same length.

Front

What does it mean for two shapes to be similar?

Back

Same shape, but different size.

Front

In similar polygons, corresponding sides are ___ and corresponding angles are ___.

Back

proportional, congruent

Front

What is the sum of the angles in a triangle?

Back

180 degrees.

Front

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

Back

They are congruent.

Front

If triangle ABC is similar to triangle DEF, and the length of side AB is 4 cm and side DE is 8 cm, what is the ratio of their sides?

Back

1:2.

Front

If the angles of triangle XYZ are 30°, 60°, and 90°, what are the angles of a similar triangle?

Back

30°, 60°, and 90°.

Front

What is the missing angle if one angle is 45° and another is 50°?

Back

85°.

Front

If two triangles have sides in the ratio 3:5, what can be concluded about their similarity?

Back

They are similar if their corresponding angles are congruent.

Front

If triangle PQR is similar to triangle STU, and the length of side PQ is 10 cm and side ST is 5 cm, what is the length of side QR if side TU is 15 cm?

Back

7.5 cm.