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Published byLoraine Stevens Modified over 8 years ago

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Pythagorean Theorem Indicator: G3a: Use Pythagorean Theorem to solve right triangle problems

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16 9 25 a b c Pythagorean Theorem:a 2 + b 2 = c 2 Given a right triangle with sides a, b, c Hint: a is shortest side, b is next, c is longest (always across from right angle) b2b2 a2a2 c2c2

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If a =3in, b=4in find the length of c a 2 + b 2 = c 2 3 2 + 4 2 = c 2 9 + 16 = c 2 25 = c 2 = c (is c Q or I) 5 in = c 16 9 c2c2 + Hint: Think of putting a + sign in the right angle symbol 4in 3in

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Determine if the following are right triangles. (Is: a 2 + b 2 = c 2 true) 1) 1.5 mm, 2.5 mm, 2mm 2) 4 ft, 6 ft, 8 ft ? ? a 2 + b 2 = c 2 1.5 2 + 2 2 ? 2.5 2 2.25 + 4 ? 6.25

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Will a 7–foot square mirror fit diagonally through this door way?? 3ft 6.5 ft a 2 + b 2 = c 2 3 2 + 6.5 2 = c 2 9 + 42.25 = c 2 51.25 = c 2 = c (is c Q or I) 7.2 c So, the mirror will fit.

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To find other sides 4cm 9.2 cm + b a 2 + b 2 = c 2 4 2 + b 2 = 9.2 2 16 + b 2 = 84.64 -16 b 2 = 68.64 b = (is b Q or I) or b 8.3

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Assignment 11-3/ 482/ 11-30

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