8.1-8.3 Review

Always, Sometimes, or Never?

All equilateral triangles are similar.

• Always

• Sometimes

• Never

Always, Sometimes, or Never?

If two polygons are similar, then the ratio of their perimeters is equal to the ratio of their corresponding sides.

• Always

• Sometimes

• Never

Always, Sometimes, or Never?

Two isosceles triangles are similar if a base angle of one triangle is congruent to a base angle of the other.

• Always

• Sometimes

• Never

Always, Sometimes, or Never?

If the midpoints of the sides of a triangle are joined to form another triangle, this new triangle is similar to the original triangle.

• Always

• Sometimes

• Never

Always, Sometimes, or Never?

If two sides of one triangle are proportional to two sides of a second triangle, the triangles are similar.

• Always

• Sometimes

• Never

Always, Sometimes, or Never?

If two triangles are congruent, then they are similar.

• Always

• Sometimes

• Never

If 7x = 14y, then the ratio of x to y is:

• 14 : 7

• 7 : 14

• 1 : 2

• 2 : 1

What is the fourth proportional to 3, 8 and 11?

Determine whether the triangles are similar or not. If so, state how they are similar.

• Yes, by AA Similarity
• Yes, by SAS Similarity
• Yes, by SSS Similarity
• No, not similar

Are the triangles similar using AA Similarity? If so, which similarity statement is correct?

• No