# Similar Triangles Math Test! Quiz

8 Questions | Total Attempts: 3540  Settings  .

• 1.
Which of the following triangles are always similar?
• A.

Right triangle

• B.

Obtuse triangle

• C.

Equilateral triangle

• D.

Isoceles triangle

• 2.
What is true of angles of similar triangles?
• A.

Opposite angles are congruent.

• B.

Corresponding angles are congurent.

• C.

Corresponding angles are 90 degrees.

• 3.
Which of the following conditions are NOT sufficient to identify a pair of congruent triangles?
• A.

Three pairs of corresponding sides are proportional (SSS).

• B.

Two pairs of corresponding sides are proportional and their included angles are equal (SAS).

• C.

Two pairs of corresponding sides are proportional and one pair of non-included angles are equal (SSA).

• D.

Two pairs of angles are equal (AA).

• 4.
The sides of a triangle are 7, 10, and 12.  Find the length of the longest side of a similar triangle whose shortest side is 21.
• A.

12

• B.

21

• C.

30

• D.

36

• 5.
In triangle ABC, angle A = 90º and angle B = 25º.  In triangle DEF, angle E = 25º and angle F = 65º.  Are the triangles similar?
• A.

True

• B.

False

• 6.
Two triangles are similar.  If the ratio of the perimeters is 5 : 3, find the ratio of the corresponding sides.
• A.

5 : 3

• B.

15 : 9

• C.

25 : 9

• 7.
State the conditions of similarity for the following pair of triangles.
• 8.
Find the unknown length x in the following figure.
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