Missing Triangle Side Lengths Similarity

Find the missing side length in a triangle with side lengths 10, 12, x if it is similar to a triangle with side lengths 15, 18, 2x.

• 15

• 24

• 25

• 20

Determine if the triangles with side lengths 3, 4, 5 and 6, 8, 10 are similar using SSS similarity postulate.

• Maybe

• No

• Sometimes

• Yes

Given two triangles with side lengths 5, 12, 13 and 10, 24, 26, determine if they are similar using SSS similarity postulate.

• No, the triangles are not congruent.

• Yes, the triangles are similar.

• Yes, the triangles are congruent.

• No, the triangles are not similar.

These triangles are similar. They are not drawn to scale. What is the length of segment VW?

• 2

• 3

• 4

• 7

Based on the drawing, which of the following statements is true?

• The triangles are similar because the lengths of the sides are congruent.

• The triangles are not similar because the corresponding angles are not congruent.

• The triangles are similar because the corresponding angles are congruent.

• Can not determine if the triangles are similar because the scale factor is unknown.

Figure Y is a dilation of Figure X.Which number best represents the scale factor used to change Figure X into Figure Y?

• 0.25

• 1.5

• 4

• 4.5

Are the following triangles similar? If so, which postulate or theorem justifies this?

• Yes, by AA

• Yes, by SAS

• Yes, by SSS

• Not similar

Are the following triangles similar? If so, which postulate or theorem justifies this?

• Yes, by AA

• Yes, by SAS

• Yes, by SSS

• Not similar

Find the value of x.

Find the value of x.

• x = 4.5

• x = 9

• x = 30

• x = 3