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Review for written final What do you call a singing computer? A Dell (Adele) Word Bank: (You may not use all the choices and you may use a choice more than once) Definition of congruent triangles Reflexive CPCTC Definition of right triangles Given HL Definition of a midpoint SAS vertical angles are congruent SSA Substitution Given: π΄πΈ β π·πΆ B is the midpoint of πΆπΈ β π΄π΅πΈ is a right angle Prove: ΞABE β ΞDBC _________Statements_____________________________________Reasons___________ 1. π΄πΈ β π·πΆ 1. 2. B is the midpoint of πΆπΈ 2. 3. π΅πΈ β π΅πΆ 3. 4. β π΄π΅πΈ is a right angle 4. 5. β π΄π΅πΈ β β π·π΅πΆ 5. 6. β πΆπ΅π· is a right angle 6. substitution 7. π₯π΄π΅πΈ and ΞDBC are right triangles 7. Definition of right triangles 8. ΞABE β ΞDBC 8. Given Given Definition of a midpoint Given Vertical angles are β HL PAP Geometry Written Semester 1 Review Name________________________ Period______ Date____________ Given the following points M (-4, 3) and N(2, -6). Use the graph provided to find the following: a. midpoint and label with C b. the slope of MN c. the slope of the line perpendicular to MN d. the slope of the line parallel to MN M β -6 a. -4 + 2 = -2 = -1 2 2 b. 9= 3 -6 -2 3 + -6 = -3 = -1.5 2 2 c. opposite reciprocal slope 2 3 d. same slope 3 -2 C β N β 9