1. Happy Quiz Day Please pick up the quiz on the back table and begin working.

3. 3.2.3 Similarity Congruence Factoring

4. Similarity ♥ same shape ♥ different size ♥ non-rigid ♥ sides in proportion ♥ angles congruent Shortcuts for triangles only: ♥ AA~ ♥ SSS~ Congruence ♥ same shape ♥ same size ♥ rigid ♥ sides congruent ♥ angles congruent Shortcuts for triangles only: (coming soon!)

5. Factoring Hop in the Way- Back machine There are 2 methods of factoring: 1.Zero Product Property (works great if the answers are whole numbers) 2.Quadratic Formula (works every time) Write this down: ax 2 + bx + c = 0 x = -b + √b 2 – 4ac 2a x = -b - √b 2 – 4ac 2a

6. Look into my eyes… From now on when ever you see an x 2 in a problem you will hear sirens

7. That’s right… From now on, whenever you see an x 2 in a problem you will know you have to You’ve been hypnotized… you have no choice.

8. examples for your notes: x 2 + 6x + 8 = 0 (x + 4) (x + 2) = 0 (x + 4) = 0 (x + 2) = 0 x = -4 x = -2 x 2 + 6x + 8 = 0 a = 1, b = 6, c = 8 x = -b + √(b2 – 4ac) 2a x = -b - √(b2 – 4ac) 2a -6 + √6 2 – 4(1)(8) 2(1) -6 + √36 – 32 2 -6 + √4 = -6 + 2 = -2 2 2 -6 - √6 2 – 4(1)(8) 2(1) -6 - √36 – 32 2 -6 - √4 = -6 - 2 = -4 2 2

9. White boards Your 2 minute doodle time will start in 2 minutes

10. Your Assignment *extra practice worksheet *factoring and quadratic formula practice wksht *pg 164 – 68-72, not 69