7M: 4.2 Indirect Measurement

Two figures are similar if their corresponding ​ (a)   are congruent, and their corresponding ​ (b)   are proportional.

• angles
• sides

Tags

TEKS.MATH.7.5A

Similar figures have the same ​ (a)   , but different ​ (b)   .

• shape
• size

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TEKS.MATH.7.5A

Mark casts a shadow that is 4 feet long. At the same time, a nearby tree casts a shadow that is 20 feet long. If Mark is 6 feet tall, which proportion could be use to find the height of the tree?

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TEKS.MATH.7.5A

Mark casts a shadow that is 4 feet long. At the same time, a nearby tree casts a shadow that is 20 feet long. If Mark is 6 feet tall, how tall is the tree?

x = ___ ft

Mathematical Equivalence

ON

Tags

TEKS.MATH.7.5A

A stop sign that is 7 feet tall casts a shadow that is 8 feet long. Which proportion could be used to find the length of the shadow casted by a nearby 63-foot tall building.

x = ___ ft

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TEKS.MATH.7.5A

A stop sign that is 7 feet tall casts a shadow that is 8 feet long. Find the length of the shadow casted by a nearby 63-foot tall building.

x = ___ ft

Mathematical Equivalence

ON

Tags

TEKS.MATH.7.5A

Mathematical Equivalence

ON

Tags

TEKS.MATH.7.5A

Mathematical Equivalence

ON

Tags

TEKS.MATH.7.5A

A 64-foot tall monument casts a shadow 16 feet long. If Kyle is standing nearby and is 6’3” tall, find the length of his shadow. Round to the nearest hundredth.

x = ___ ft

(Hint: convert 6'3" to a decimal)

Mathematical Equivalence

ON

Tags

TEKS.MATH.7.5A

A 25-foot tall streetlight casts a shadow 20 feet long. If Melanie is standing at the end of the shadow casted by a 60-foot tall building, how far is she from the building?

x = ___ ft

Mathematical Equivalence

ON

Tags

TEKS.MATH.7.5A