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# Geom3-1hour3

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### Geom3-1hour3

1. 1. Geom3­1hour3.notebook October 03, 2011 BELL WORK: Write a 2­column proof for the following. Given: Diagram as shown.       1 =    2. 1 2 3 4 Prove:    2 =    3. Agenda for Today: • section 3.1 • exit slip • return Ch. 2 tests and other homework 1
2. 2. Geom3­1hour3.notebook October 03, 2011 3.1 ­ What are congruent figures? After this lesson, you should be able to: 1. Define congruent figures. 2. Accurately identify corresponding parts of figures. Read on p.111 ­ Introduction Congruent triangles  all pairs of corresponding parts are congruent. A D How do we write that these  triangles are congruent? B C E F 2
3. 3. Geom3­1hour3.notebook October 03, 2011 Congruent polygons all pairs of corresponding parts are congruent. N T Z W R U L P Y E C F Check out the paragraph under the  definition of congruent polygons on p. 112!  Look at you guys being ahead of the game! Congruent triangles?? D U R T Y 3
4. 4. Geom3­1hour3.notebook October 03, 2011 A new use for the REFLEXIVE PROPERTY! H X S Q Reflexive Property: Any segment or angle is congruent to itself. p.113 Sample Problem 1 D M C 2 1 4 3 A N B 4
5. 5. Geom3­1hour3.notebook October 03, 2011 p.114 Sample Problem 2 E Q R P 5 7 6 8 F G EXIT SLIP ERC = ? E C R T HOMEWORK: p.114 #2,3,4 Due Wednesday 5
6. 6. Geom3­1hour3.notebook October 03, 2011 6