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A-Geometry Ch 8 Review Prize Show Tootsie rolls Paper airplane contest: ? Vs. ? Jolly ranchers 4. Pictionary: ? Vs. ? 7. 8. Starburst 1. Cookies!! Charades: ? Vs. ? 10. 2. 5. 3 pts EC on Test! 11. Donut 3. holes!! 6. Tiger roar contest: ? Vs. ? 9. Hangman, by ? Saturday Night Fever: disco dance-off: ? Vs. ? 12. 1. Always, Sometimes or Never? a.) If the vertex 's of 2 isosceles 's Always are , then the 's are . b.) If one of the base 's of an isosceles one of the base 's of another isosceles , then the ' s are . Always c.) Two squares are . Always d.) Two rhombuses are . Sometimes 2. Always, Sometimes or Never? a.) If 2 's are , then they . Always b.) If 2 's are , then they . Sometimes c.) If 2 's are , then the ratio of their perimeters = the ratio of a pair of corresponding sides. Always 3.a.) If mQ = 80, what is the ratio of the complement of Q to the supplement of Q ? Complement 90 80 10 1 Supplement 180 80 100 10 3.b.) What is the 4th proportional to 1 1 , 4 and 8 ? 2 8 so, 1 x 32, 2 4 x 2 and x 64 4.a.) What is the geometric mean of 4.6 and 12.8 ? 4.6 x 2 so, x 58.88 and x 7.7 x 12.8 4.b.) What is the arithmetic mean of 4.6 and 12.8 ? 4.6 12.8 8.7 2 5.a.) If BIG MAC, IG then =? BG AC MC x 2 y 2x 3 y 5.b.) If , 5 6 what is the ratio of x to y? x 27 y 4 6.a.) What is the value of x? x 12 4 x6 8 6.b.) A has side lengths of 7, 8 & 9. A has a perimeter of 72. What is the shortest side of the Shortest side = 21 789 7 72 x ? x 9 8 >10 > 12 y 7a.) What is the value of x? x6 7b.) What is the value of y? y 25 8.) What is the length of KE? 8 P U 4 6 E K 10 N Given: PUNK is a trapezoid with bases PU & KN . KE 5 9.) As x increases by 5, how much does y increase or decrease? y B(12, 20) A(2, 4) x y increases by 8 when x increases by 5. 10.) What are the values of x and y? y x 9 6 5 , so x 2.4 x 2 2 6 3 6 5 , so y 10.8 y 2.4 11 11.) What is the length of PC? M 9 P 15 12 30° N C A Given: PAC is a reduction of MAN. 12 24 , so PC 7.5 PC 15 5 2 > > > S O U 6 > P SU 12.a.) What is ? UP 12.b.) If SU = 14, what is SO? SU 7 UP 6 SO 14 , so SO 4 2 7