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Geometric Mean Worksheet

This worksheet focuses on understanding and applying the geometric mean in right triangles, including solving for missing side lengths and altitudes.

Grade 9 Math GeometryGeometric Mean
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Includes

Fill in the Blanks2 Short AnswerMultiple ChoiceTrue / False

Standards

CCSS.MATH.CONTENT.HSG.SRT.B.5

Topics

geometrygeometric meanright trianglesgrade 9
7 sections · Free to use · Printable
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Geometric Mean in Right Triangles

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Read each question carefully and solve for the missing values. Show all your work.

1. The geometric mean of two positive numbers a and b is  .

2. In a right triangle, the altitude drawn to the hypotenuse creates three   triangles.

3. The length of the altitude to the hypotenuse of a right triangle is the geometric mean between the two   of the hypotenuse.

4. Find the value of x in the diagram below.

49x

5. A right triangle has an altitude drawn to its hypotenuse, dividing it into segments of length 3 cm and 12 cm. What is the length of the altitude?

6. Find the value of y in the diagram below.

164y

7. The hypotenuse of a right triangle is 20 units long. If one leg is 8 units long, and the adjacent segment of the hypotenuse is 4 units, find the length of the other leg using the geometric mean.

8. What is the geometric mean of 2 and 18?

a

6

b

10

c

12

d

36

9. The arithmetic mean and geometric mean of two distinct positive numbers are always equal.

T

True

F

False