Geometry notes 9-18-17.pdf - Geometry Date 1 Identify the linear pair(s that include \u22201 2 Identify the vertical angles 3 Are \u22206 and \u22207 a linear

# Geometry notes 9-18-17.pdf - Geometry Date 1 Identify the...

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Use the diagram above for questions 1 – 3. 1. Identify the linear pair(s) that include 12. Identify the vertical angles. 3. Are 6 and 7a linear pair? Explain. 4. Given diagram with AC! "##and DB! "##intersecting at L. Determine mDLAB C L A 5x+ 10 10y- 30 3x+ 2y Geometry Date: 09/18/2017 . . D
For each of the following problems, read through the given and determine what conclusion directly follows the given. Write and justify your conclusion using an if…then…becausestatement. Be sure to label your diagrams. 1. Given: BC bisects AD at C. Conclusion: If BC bisects AD at C, then AC CD because when a segment bisects another segment it creates two congruent segments. 2. Given: Diagram Conclusion: If 1 and 2 are vertical, then 1 ≅ ∠ 2 because vertical angles are congruent. 3. Given: AB DC Conclusion: If AB DC , then ABC is right because perpendicular segments form a right angle. 2 1 B D C A C A B D
1 2 J M K L F C D A B 4. Given: Diagram Conclusion: If 1 and 2 are a linear pair (adjacent and form a straight angle), then 1 is supplementary to 2 because a linear pair of angles are always supplementary. 5. Given: K is the midpoint of JL Conclusion: If K is the midpoint of JL , then JK KL because a midpoint divides a segment into two congruent segments. 6. Given: CD bisects AB at F Conclusion: If CD bisects AB at F, then AF FB because when a segment bisects another segment it divides it into two congruent segments.