Similarity

Proportions

100

There are 17 boys in a class and 22 girls. Find the ratio of boys to students.

What is 17:39?

200

The Leaning Tower of Pisa in Italy is 185 ft. tall. A model of the Leaning Tower is 0.5 ft tall. Find the ratio of the height of the model to the height of the real tower.

What is 1:370?

300

Solve for x. x/3 = 5/9.

What is 1.67 or 5/3

400

Solve for x. x/7 = 8/14

What is x = 4

500

Solve for x. 3/5 = 6/x

What is 10

Similar Polygons

100

JDRT ~ JHYX

\angleD \cong \angle?

What is H?

200

JDRT ~ KLMN

\overline{LM} ~ ?

What is 

\overline{DR}?

300

JDRT ~ JHYX

\frac{JD}{JH} = \frac{DR}{?}

What is HY?

400

\triangle MLN ~ \triangle ABC

If ML=8, LN=10, AB=x, and BC=5

x=___

What is 4?

500

Triangle MLN and Triangle ABC are similar. ML=8, LN=10, NM=6, AB=x, CA=y, BC=5. Find y.

What is 3?

More similar polygons

100

\triangle{ABC} ~ \triangle{FED}

If  \angleA measures 75^o, what is the measure of   \angleF ?

75^o

200

ABCD ~ EFGH. AB = 30 and EF = 45. What is the scale factor from ABCD to EFGH?

1.5 or 3/2

300

Triangles ABC and YZX are similar. AB=5, AC=3, YX=4.5, and YZ=x. Find x.

What is 7.5?

400

Triangle JKL has sides JK=9, JL=12, and KL=15. Triangle PQR has sides PQ=1.5, PR=2, and QR=2.5. What is the scale factor between these two triangles?

6

500

FHG ~ NDL. Angle F = 38^o and Angle H = 82^o. What is the measure of angle L?

60^o