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Similar Right Triangles and Pythagorean Theorem

Total questions: 15

Worksheet time: 11mins

Name
Class
Date
1.

Which triangle is similar to ∆MNO?

a)

∆PNM

b)

∆MPN

c)

∆PMN

d)

∆NPM

2.

Which triangle is similar to ∆ABC

a)

∆BCD

b)

∆CBD

c)

∆CDB

d)

∆BDC

3.

In the figure, AD = 10 and BD = 5, find the length of CB.

a)

525\sqrt[]{2}

b)

535\sqrt[]{3}

c)

565\sqrt[]{6}

d)

5

4.

In the figure, AD = 10 and BD = 5, find the length of AC.

a)

525\sqrt[]{2}

b)

535\sqrt[]{3}

c)

565\sqrt[]{6}

d)

5

5.

In the figure, AD = 10 and BD = 5, find the length of CD.

a)

525\sqrt[]{2}

b)

535\sqrt[]{3}

c)

565\sqrt[]{6}

d)

5

6.

In the figure, DF = 6, FB = 8, find the length of CF

a)

4.5

b)

4

c)

6

d)

3.5

7.

Right triangle ACB is isosceles with right angle at C. If AB = 12, find the length of AC.

a)

2 6\sqrt[]{6}

b)

232\sqrt[]{3}

c)

323\sqrt[]{2}

d)

626\sqrt[]{2}

8.

ABCD is a rectangle with base AB = 8 cm and height BC = 6 cm. Find the length of a diagonal.

a)

10 cm

b)

12 cm

c)

14 cm

d)

18 cm

9.

ΔABC\Delta ABC is isosceles with base BC. If AB = 12 cm and

BC = 10 cm, how long is the altitude to BC?

a)

13 cm

b)

119\sqrt[]{119} cm

c)

2112\sqrt[]{11} cm

d)

2612\sqrt[]{61} cm

10.

The side lengths of a triangle are 5, 9 and 13. What kind of triangle is this?

a)

Right

b)

Acute

c)

Obtuse

d)

not a triangle

11.

ΔSQR∼ΔSPT. Which choice below lists two corresponding sides?

a)

SP and SR

b)

QS and PT

c)

PS and RS

d)

TP and RQ

12.

State if the triangles in each pair are similar. If so, state how you know they are similar.

a)

Yes, AA Similarity

b)

Yes, SSS Similarity

c)

Yes, SAS Similarity

d)

Not Similar

13.

The side lengths of a triangle are 7, 8 and 10. What kind of triangle is this?

a)

Right

b)

Acute

c)

Obtuse

d)

not a triangle

14.

The side lengths of a triangle are 323\sqrt[]{2} , 7\sqrt[]{7} and 11\sqrt[]{11} . What kind of triangle is this?

a)

Right

b)

Acute

c)

Obtuse

d)

not a triangle

15.

The following is a rule of thumb for safety positioning of the ladder:

The distance from the bottom of the ladder to the wall should be one-fourth of the length of the ladder.

How far up the wall will a 16-foot ladder reach if positioned properly?

a)

4154\sqrt[]{15}

b)

454\sqrt[]{5}

c)

434\sqrt[]{3}

d)

4174\sqrt[]{17}