Free Printable TEKS 8.3A

1.

Triangle ABC and triangle DEF are similar. Which proportion must be true?

a)

$\frac{7}{x}=\frac{4}{6}$

b)

$\frac{4}{6}=\frac{x}{7}$

c)

$\frac{6}{4}=\frac{x}{7}$

d)

$\frac{4}{x}=\frac{7}{6}$

2.

Figure I and Figure II are similar figures. Which proportion must be true?

a)

$\frac{RS}{AB}=\frac{TU}{CD}$

b)

$\frac{TU}{AB}=\frac{UV}{AF}$

c)

$\frac{ST}{EF}=\frac{WR}{CD}$

d)

$\frac{WV}{AB}=\frac{ST}{EF}$

3.

Figure I and Figure II are similar quadrilaterals. Which proportion must be true?

a)

$\frac{a}{b}=\frac{8}{2}$

b)

$\frac{3.2}{2}=\frac{a}{8}$

c)

$\frac{b}{6.4}=\frac{8}{5}$

d)

$\frac{2}{3.2}=\frac{b}{a}$

4.

Figure ABCDE is similar to figure VWXYZ. Which proportion must be true?

a)

$\frac{AE}{XY}=\frac{CD}{VZ}$

b)

$\frac{AB}{VW}=\frac{YZ}{DE}$

c)

$\frac{BC}{XY}=\frac{DE}{YZ}$

d)

$\frac{AB}{VW}=\frac{CD}{XY}$

5.

In the diagram a person who is 6 ft tall is standing on the ground 3 ft away from point P. A line segment drawn from the top corner of the building to point P creates two similar triangles. Which proportion can be used to find h, the height of the building in feet?

a)

$\frac{3}{h}=\frac{18}{6}$

b)

$\frac{6}{3}=\frac{h}{18}$

c)

$\frac{3}{15}=\frac{h}{6}$

d)

$\frac{6}{3}=\frac{18}{h}$

6.

Figure I and Figure II are similar pentagons. Which proportion must be true?

a)

$\frac{y}{x}=\frac{4.2}{3.15}$

b)

$\frac{6}{x}=\frac{5.25}{7}$

c)

$\frac{y}{6}=\frac{7}{5.25}$

d)

$\frac{x}{4}=\frac{3}{6}$

7.

Quadrilateral KLMN is similar to quadrilateral TUVW. Side lengths are given in centimeters. Which proportion must be true?

a)

$\frac{y}{15}=\frac{22.5}{28}$

b)

$\frac{y}{28}=\frac{5}{22.5}$

c)

$\frac{20}{30}=\frac{5}{x}$

d)

$\frac{15}{20}=\frac{x}{30}$

TEKS 8.3A

Total questions: 7

Worksheet time: 4mins

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