11-7 Indirect Measurement

Indirect Measurement

Open Ended

What do you notice?

What do you wonder?

Similar Triangles -- same shape, different size

• Angles Must Be Congruent (the same size)

• Sides Must Be Proportion (the ratios of corresponding sides will be equivalent fractions

​Solution:

​Solution:

Multiple Choice

• 205

• 105

• 230

• 135

Multiple Choice

To find the height of a very tall pine tree, you place a mirror on the ground and stand where you can see the top of the pine tree.  How tall is the tree?

• 144 feet

• 72 feet

• 36 feet

Multiple Choice

• 6.25

• 5.5

• 6

• 5.75

Multiple Choice

A tree is 12 feet tall and casts a shadow 9 feet long. A building nearby casts a shadow that measures 24 feet. How tall is the building? (Draw a picture, set up a proportion)

• 24 feet

• 21 feet

• 27 feet

• 32 feet

Multiple Choice

Find the height of the statue

• 20

• 30

• 25

• 23

Multiple Choice

Find the height of the flagpole

• 15

• 13

• 11

• 17

Multiple Choice

Find the width of the river. (d)

• 28.8 feet

• 500 feet

• 45 feet

• 0.002 feet

Multiple Choice

Find the height of the building

• 74ft

• 100ft

• 104ft

• 108ft

Multiple Choice

Find the height of the tree.

• 8 ft

• 12 ft

• 13 ft

• 15 ft

Multiple Choice

• The river is 4.8 m wide.

• The river is 30 m wide.

• The river is 7.5 m wide.

• The river is 32 m wide.