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8 th Grade Math

8 th Grade Math. 1 st , 2 nd , & 4 th Period Nov . 2, 2012. Do Now! Pythagorean Theorem Quiz. See Ms. Wolf if you need to make this up!. HW Review; No Warm-Up. To be posted after make-up work is turned in on Monday. Looking for length of a leg. a 2 + b 2 = c 2 6 2 + x 2 = 10 2

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8 th Grade Math

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  1. 8th Grade Math 1st, 2nd, & 4th Period Nov. 2, 2012

  2. Do Now! Pythagorean Theorem Quiz • See Ms. Wolf if you need to make this up!

  3. HW Review; No Warm-Up • To be posted after make-up work is turned in on Monday

  4. Looking for length of a leg a2 + b2 = c2 62 + x2 = 102 36 + x2 = 100 -36-36 x2 = 64 x = 8 Using the Pythagorean Theorem 10 6 x

  5. You Try! (#7 on Applications WS) Find the missing lengths.

  6. You Try! (#7 on Applications WS) Find the missing lengths.

  7. Using The Pythagorean Theorem In Word Problems A 15 foot ladder leans up against a building. The foot of the ladder is 5 feet from the base of the building. How high up the wall, to the nearest foot, does the ladder reach? Draw a picture: x 15 5

  8. Looking for length of a leg a2 + b2 = c2 x2 + 52 = 152 x2 + 25 = 225 -25-25 x2 = 200 The ladder reaches approx. 14 feet up the wall. Using the Pythagorean Theorem x 15 5

  9. Using The Pythagorean Theorem In Word Problems Tim rode 8 miles due north, then 3 miles due east. How far, to the nearest mile, is Tim from where he started? 3 Draw a picture: 8 x

  10. Looking for length of the hypotenuse a2 + b2 = c2 82 + 32 = x2 64 + 9 = x2 73 = x2 Tim is approx. 9 miles from where he started. Using the Pythagorean Theorem 3 8 x

  11. HW • Front of “Using the Pythagorean Theorem in Word Problems – WS #2” • Monday’s Do Now! Quiz will be on Pythagorean Theorem Word Problems

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