Indirect Measurement Lesson Slides: 4 Slides (7th Grade)

4 Slides • 8 Questions

1

Indirect Measurement Using Similar Triangles

2

Fill in the Blanks

Are these 2 triangles similar, if so how?

Type answer...

3

Draw

Are these triangles similar, is so write how they are similar?

4

5

Math Response

At the same time a 2 meter street sign casts a 3 meter shadow, a nearby telephone pole casts a 12.3 meter shadow. How tall is the telephone pole?

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Deg^°

Rad

6

Example

In this problem we are trying to find the distance from D to E, the length of Lake Okeechobee.

7

Fill in the Blanks

Why are these two triangles similar?

Type answer...

8

Math Response

Find the distance across Lake Okeechobee

Type answer here

Deg^°

Rad

9

Math Response

Find d

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Deg^°

Rad

10

Example

An engineer wanted to approximate the width of a river. She placed markers at Point A and Point B to represent the average width of the river. She also placed 3 other markers along the riverbank and measured the distances shown in the diagram below.

11

Fill in the Blanks

An engineer wanted to approximate the width of a river. She placed markers at Point A and Point B to represent the average width of the river. She also placed 3 other markers along the riverbank and measured the distances shown in the diagram below. How are the triangle similar?

Type answer...

12

Fill in the Blanks

An engineer wanted to approximate the width of a river. She placed markers at Point A and Point B to represent the average width of the river. She also placed 3 other markers along the riverbank and measured the distances shown in the diagram below. Find the distance from A to B

Type answer...

Indirect Measurement Using Similar Triangles

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