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Altitude of a Triangle Worksheet

Explore the properties and calculation of altitudes in various types of triangles, including exercises on finding altitude lengths and equations.

Grade 11 Math GeometryAltitude of a Triangle
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Includes

3 Short AnswerMultiple ChoiceFill in the BlanksTrue / False

Standards

CCSS.MATH.CONTENT.HSG.CO.C.10CCSS.MATH.CONTENT.HSG.SRT.C.8

Topics

GeometryTriangleAltitudeHigh School Math
8 sections · Free to use · Printable
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Altitude of a Triangle

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Date:

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Read each question carefully and answer to the best of your ability. Show all your work for full credit.

1. Define the term 'altitude of a triangle' and describe its key properties.

2. In an obtuse-angled triangle, where do the altitudes intersect?

a

Inside the triangle

b

Outside the triangle

c

On one of the vertices

d

On one of the sides

3. The point where the three altitudes of a triangle intersect is called the  .

4. Consider a triangle with vertices A(1, 2), B(7, 2), and C(4, 6). Calculate the length of the altitude from vertex C to side AB. Show your steps.

024682468

5. In a right-angled triangle, two of its altitudes are the legs of the triangle.

T

True

F

False

6. An equilateral triangle has a side length of 10 cm. Find the length of its altitude. (Hint: Use the Pythagorean theorem).

10 cm10 cm10 cm