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CHECK ALL THREE PAGES!!! QUIZ TOMORROW!!! 2-2 Homework Key (Medians & Angle Bisectors) 1. x = 6 2. x = 3 5. x = 12 AD = 168 6. x = 6 <BAC = 840 4. x = 11 3. x = 2 7. x = 16 OE = 178 9. y = 13 <BAC = 700 11. y = 5 y = -2 AC = 80 12. y = 4 8. x = 17 DC = 71 10. x = 9 x = 12 CD = 168 x = 20 CHECK ALL THREE PAGES!!! QUIZ TOMORROW!!! 2-3 Homework Key (Altitude & Perp Bisectors) 1. x = 24 3. <ABC = 710 5. <CAD = 530 7. x = 24 9. x = 6 11. y = 9 EO = 42 13. x = 1 SU = 4 y = 10 <XTV = 600 2. x = 5 <DBC = 380 4. x = 37 6. x = 7 8. y = 8 x = 30 10. x = 16 12. x = 8.5 14. < PSR = 720 No, PS is not an altitude. CHECK ALL THREE PAGES!!! QUIZ TOMORROW!!! 6 keywords & what they do Vertical Angles: Create congruent angles Statement: Vertical angles create congruent angles Then write an equation to it the question Supplementary angles: Add to 1800. Commonly found as a linear pair. Statement: Supplementary angles equal 1800 Then write an equation to it the question Medians: Create a midpoint; midpoints create two congruent segments Example: BD is a median Statement: AD ~ = DC Then write an equation to it the question Angle Bisectors: Create two congruent angles. Example: AD is an angle bisector Altitudes: Create right angles Example: BD is an altitude B A D C Statement: <BAD ~ = <CAD Then write an equation to it the question Statement: <BDA is a right angle or <BDC is a right angle Then write an equation to it the question Perpendicular bisectors: Create right angles AND create midpoints (which then create congruent segments) Ex: BD is a perpendicular bisector Statement: <BDA is a right angle or <BDC is a right angle ~ DC or AD = Then write an equation to it the question