REVIEW 6.1: RATIOS, PROPORTIONS AND GEOMETRIC MEAN
RATIO: Comparison of 2 values written as a fraction in lowest terms with similar units. GEOMETRIC MEAN: A special proportion- Denominator of the first fraction and numerator of the second fraction are equal. Where a and b are numbers. Solve proportions and geometric means by CROSS MULTIPLICATION!
ANGLE/ANGLE SIMILARITY POSTULATE: If two angles of one triangle are congruent to two angles of another triangle, then the two triangles are similar. TRIANGLE PROPORTIONALITY THEOREM: If a line parallel to one side of a triangle intersects the other two sides, then it divides the two sides proportionally. CONVERSE OF THE TRIANGLE PROPORTIONALITY THEOREM: If a line divides two sides of a triangle proportionally, then it is parallel to the third side.
PRACTICE: Determine whether the triangles are similar. If they are, write a similarty statement. Explain your reasoning.
Write a proportion using Triangle Proportionality Theorem Substitute known values Cross Multiply and check that they are equal.
CHAPTER 6 QUIZ You have up to 30 minutes to complete your quiz. Are you prepared? Pencil? Calculator? Chapter 6 notes ONLY allowed If you finish early: Finish any missing assignments. Work on something quietly as the rest of your fellow classmates complete their quizzes. NO TALKING. STAY IN YOUR SEATS. RETURN ANY BORROWED BOOKS & CALCULATORS
ALL ASSIGNMENTS DUE TODAY! If finished, work on other assignments: HW #1: Pg. 360: 20-52 even HW #2: Pg. 367: 3-12, 16-18 HW #3: Pg. 379: 40-48 HW #4: Pg. 376: 3-12, 33 Practice 6.3 Worksheet HW#5: Pg. 384: 3-14 Pg. 400: 5-11, 16-17