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Geometry

Geometry. Mr. Stricker. My Rules. (Interact) Be Prepared to “Share the Math” (You can talk) Let’s Have Productive Discussions Ask questions (Even when you understand) No electronic distractions or others (we have limited time) Let’s be respectful toward one another (part of learning).

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Geometry

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  1. Geometry Mr. Stricker

  2. My Rules • (Interact) Be Prepared to “Share the Math” • (You can talk) Let’s Have Productive Discussions • Ask questions (Even when you understand) • No electronic distractions or others (we have limited time) • Let’s be respectful toward one another (part of learning)

  3. Do-Now (5 min)

  4. What’s the Big Idea? • Think about this with your partner: • If I draw three lines on a coordinate plane, do they always form a triangle?

  5. Algebra Proofs Q.E.D - quod eratdemonstrandum O.T.I.IS !

  6. When you leave here today • You will be able to recognize “if-then” conditional statements • You will be able to construct “if-then” conditional statements • You will be able to construct other related conditional statements • You will be able to find the truth value of conditional statements • SO YOU CAN GET READY FOR GEOMETRIC PROOFS

  7. What’s a conditional statement? • Ifyou are in the classroom, thenyou are in the school building • IF: you are in the classroom • THEN: you are in the school building • An “if-then” statement

  8. What’s a conditional statement? • Triangles have three sides • IF: If a figure is a triangle (hypothesis) • THEN: It has three sides (conclusion) • An “if-then” statement

  9. What’s a conditional statement? “If B is between A and C, then AB + BC = AC” “Ifpoint B is between A and C, thenAB + BC = AC” A B C

  10. “Ifyou can read this (p), thenyou are too close” (q)

  11. TRUE OR FALSE? 90º A 0º

  12. Constructing conditional statements Example: Dogs have four legs In your Groups/pairs • Tiggles are talking • I will take my umbrella when I go in the rain • I will make a three point shot when I play basketball • When I finish my homework, I will play on the computer

  13. Exit Ticket • PLEASE MAKE SURE YOU COMPLETE IT BEFORE YOU LEAVE • PICK-UP YOUR HOMEWORK

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