Quiz in Geometry

1/2 = 2/4
is an example of a ________ .

• ratio
• proportion 
• similar figure
• congruence

Find the measure of x:

• 8
• 12
• 16
• 30

Solve for m:

• 5
• 6
• 3.5
• 4.5

Use the scale factor to find the unknown measure:

• 21
• 42
• 12
• 18

Use the scale factor to find the unknown measure:

• 22
• 25
• 45
• 36

Find the measure of x:

• 15
• 12
• 6
• 9

Do the ratios form a proportion?

• Yes, they form a proportion.
• No, they do not form a proportion.

In similar Polygons, corresponding sides are ___ and corresponding angles are ___. (Fill in the blanks)

• congruent, proportional 
• proportional, congruent 
• congruent, congruent
• proportional, proportional

The lengths of the sides of a triangle are 5, 12, and 13.  What is the length of the longest side of a similar triangle whose perimeter is 90?

• 13
• 15
• 36
• 39

Are the triangles similar? Explain.

• No, because only one angle of the triangles is congruent.
• Yes, because two of the angles are congruent.
• No, because only one triangle has a right angle.
• Not enough information to determine.