17 March 2011 Warm UP– silently please

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17 March 2011 Warm UP– silently please 1) HOMEWORK DUE NEXT CLASS: pg. 490: 1 – 15 odds start by writing the problem exactly as given 2) WARM UP- see next slide

Warm up C is the midpoint of AE and BD 2. Solve for x Name the congruent triangles and why? 2. Solve for x Find the length of d 4. Find the missing length 5. Triangle ABD is an Isosceles 6. Complete the list of perfect squares: 4, 9, 16, ___, ___, 49, ____, 81, ____, 100

Students will be able to simplify radical expressions Objective Students will be able to simplify radical expressions Homework Due TODAY pg. 486: 1- 6, 13-15 Include sketch, formula, substitution, math, units √ or X or -10

Chapter 9 Pythagorean Theorem Definition Term Definition Example Converse of the Pythagorean Theorem If the lengths of the three sides of a triangle satisfy the Pythagorean equation, then the triangle is a right triangle Pythagorean triples Three positive integers that work in the Pythagorean equation

Use the converse of the Pythagorean Theorem to determine whether each triangle is a right triangle Find y:

words to know factors- a number that can evenly be divided into another number i.e. factors of 24 = 1, 2, 3, 4, 6, 8, 12, 24 prime factors- a factor that is divisible only by itself or 1 perfect square- a number that is a product of some integer with itself prime factorization- expressing a number as a product of prime numbers

prime factoring Use repeated division by prime factors or use a factoring tree: http://amby.com/educate/math/2-1_fact.html http://www.mathplayground.com/factortrees.html

Practice Find the prime factors of: 1) 100 2) 200 3) 156 4) 75 5) 150

properties of radicals 1) 2) 3) 4)

see page 489 read together Example A: simplify Example B: Multiply by PRACTICE– Class work- do pg. 490: 2 – 16 evens

Quiz silently Do your best. Show formula, math, substitution, units When you are finished you may silently work on your homework.