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Warm Up

Week 1. Warm Up. 08.18.11. 1) │4 – 11│. 2) │1.2 – 4.3│. ( -2 ) 2 + 3 2. 3). 19) DE + EF = DF. 26) 11. Homework 1.3 Day 1. 20) GH + HJ = GJ. 27) 6. 21) NM + MP = NP. 28) 14. 22) QR + RS = QS. 29) 9. 23) 3. 30) 17. 31) 4, 20 3, 23. 24) 3.

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Warm Up

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  1. Week 1 Warm Up 08.18.11 1) │4 – 11│ 2) │1.2 – 4.3│ ( -2 )2 + 32 3)

  2. 19) DE + EF = DF 26) 11 Homework 1.3 Day 1 20) GH + HJ = GJ 27) 6 21) NM + MP = NP 28) 14 22) QR + RS = QS 29) 9 23) 3 30) 17 31) 4, 20 3, 23 24) 3 25) 3 32) 13, 100, 43, 143

  3. • C 21 Re 1 • A 7 AB • B AB + 7 = 21 AB = 21 - 7 AB = 14

  4. Congruent Same Congruent Segments Segments that are the same 4 4 • • A B Ex 1 • • B C Segments are Congruent Lengths are Equal AB = BC AB BC

  5. Distance Formula AB = ( x2 – x1 )2 + ( y2 – y1 )2 Ex 2 B ( 3 , 2 ) (-4 , 3 ) C A (-1 , 1 ) D ( 2 , -1 )

  6. ( x2, y2 ) ( x1, y1 ) AD = AD = AD = AD = AD = ( 3 )2 + ( -2 )2 9 + 4 13 ( x2 – x1 )2 + ( y2 – y1)2 ( 2 – ( -1 ) )2 + ( ( -1 ) – 1 )2 D( 2, -1 ) A( -1 , 1 )

  7. AC = ( x2 – x1 )2 + ( y2 – y1 )2 Do 2

  8. KL ? Ex 3 Is JK JK = JK = JK = JK = 29 ( 5 – 0 )2 + ( 2 – 0 )2 ( 5 )2 + ( 2 )2 25 + 4 J ( 0 , 0 ) K ( 5 , 2 ) L ( 8 , 6 )

  9. KL ? Is JK KL = KL = KL = KL = 25 9 + 16 ( 8 – 5 )2 + ( 6 – 2 )2 ( 3 )2 + ( 4 )2 J ( 0 , 0 ) K ( 5 , 2 ) L ( 8 , 6 ) JK and KL are not

  10. Review What is a Postulate? J ( 0 , 0 ) Is JK JL Do 3: K ( 5 , 2 ) L ( 8 , 6 ) Textbook page 22, 34 – 43 all and 46. Assignment

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