8 Questions

Questions and Answers

- 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.
- 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.