Pythagorean Theorem - Solving for Legs

Flashcard
•
Mathematics
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Pythagorean Theorem?
Back
The Pythagorean Theorem states that in a right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b). It can be expressed as: c² = a² + b².
2.
FLASHCARD QUESTION
Front
How do you find the length of a missing leg in a right triangle?
Back
To find the length of a missing leg (a or b) in a right triangle, rearrange the Pythagorean Theorem: a² = c² - b² or b² = c² - a², then take the square root of the result.
3.
FLASHCARD QUESTION
Front
If one leg of a right triangle is 5 and the hypotenuse is 13, what is the length of the other leg?
Back
Using the Pythagorean Theorem: a² + 5² = 13²; a² + 25 = 169; a² = 144; a = 12.
4.
FLASHCARD QUESTION
Front
What is the length of the hypotenuse if both legs are 6?
Back
Using the Pythagorean Theorem: c² = 6² + 6²; c² = 36 + 36; c² = 72; c = √72 = 6√2 or approximately 8.49.
5.
FLASHCARD QUESTION
Front
In a right triangle, if one leg is 8 and the hypotenuse is 10, what is the length of the other leg?
Back
Using the Pythagorean Theorem: a² + 8² = 10²; a² + 64 = 100; a² = 36; a = 6.
6.
FLASHCARD QUESTION
Front
What is the relationship between the sides of a 30-60-90 triangle?
Back
In a 30-60-90 triangle, the lengths of the sides are in the ratio 1:√3:2. The shortest side is opposite the 30° angle, the longer leg is opposite the 60° angle, and the hypotenuse is twice the shortest side.
7.
FLASHCARD QUESTION
Front
If a ladder is leaning against a wall and forms a right triangle, how can you find the height it reaches?
Back
Use the Pythagorean Theorem: height² + base² = ladder length². Solve for height.
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