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Published byAbby Winchel Modified over 2 years ago

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Special Shortcuts for 45-45-90 and 30-60-90 Triangles

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45-45-90 Triangle If you know the length of the leg, multiply that by 2 to find the length of the hypotenuse.

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Do problems 1-3 on handout

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45-45-90 Triangle If you know the length of the hypotenuse and you want the length of the leg, divide the length of the hypotenuse by 2.

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Do problems 4-6 on handout

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30-60-90 Triangle When working with a 30-60-90 triangle, you will have three different lengths: Short leg Long leg Hypotenuse

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30-60-90 Triangle If you know the length of the short leg: The length of the hypotenuse is twice the length of the short leg. The length of the long leg is the length of the short leg multiplied by 3.

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Do problems 7-9

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30-60-90 Triangle If you know the length of the hypotenuse: Find the length of the short leg by dividing the length of the hypotenuse by 2. Now that you know the length of the short leg, multiply it by 3 to find the length of the long leg.

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Do problems 10-12

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30-60-90 Triangle If you know the length of the long leg: Find the length of the short leg by dividing the length of the long leg by 3. Now that you know the length of the short leg, multiply it by 2 to find the length of the hypotenuse.

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Do problems 13-15

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