
Indirect Measurement (2020-2021)
Flashcard
•
Mathematics
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is Indirect Measurement?
Back
Indirect measurement is a technique used to determine the height or distance of an object without directly measuring it, often using similar triangles or reflections.
2.
FLASHCARD QUESTION
Front
How can mirrors be used in indirect measurement?
Back
Mirrors can be used to create a line of sight to the top of an object, allowing the observer to use similar triangles to calculate the object's height.
3.
FLASHCARD QUESTION
Front
What is the formula for similar triangles?
Back
If two triangles are similar, the ratios of their corresponding sides are equal. For example, if triangle A and triangle B are similar, then A1/A2 = B1/B2.
4.
FLASHCARD QUESTION
Front
If a tree is 72 feet tall and has a shadow of 12 feet, what is the height of a nearby tree with a shadow of 5 feet?
Back
30 feet.
5.
FLASHCARD QUESTION
Front
What is the height of a building if it is determined to be 108 feet tall?
Back
108 feet.
6.
FLASHCARD QUESTION
Front
How do you solve for x in a proportion?
Back
Cross-multiply the terms and then isolate x. For example, if a/b = c/x, then a*x = b*c.
7.
FLASHCARD QUESTION
Front
What is the height of a flag if it is determined to be 15 feet tall?
Back
15 feet.
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