homework evens answers - bedford public schoolsjesse_dix/01143112-000f8bdf.12/3.4...homework evens...
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Homework Evens Answers
pg 5860:
2. 1) Given 28. 2) Angle addition postulate 3) Substitution property of = 4) Division Prop of = 5) l is perp. to n
4. Def of perp. lines
6. Def. of comp angles
8. If two lines form ≅ adjacent angles, then the lines are perp.
26. Answers may vary. Here are some possibilities:
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Objective Plan proofs (2.6)
• One strategy for proofs Start at the end + work your way backward
• There are different ways to state the same theorem.
ex: If two lines are perp, then they form ≅ adj, angles.
OKAY: Perp lines form ≅ adj, angles OR 2 lines perp ⇒They form ≅ adj, angles
NOT OKAY: Perp. lines are ≅ adj, angles
• Thm 27
Statements Reasons
Given:
Prove:
4
•
• Classroom exercises, pg 62: 15
1. a) DO NOT COPY DIAGRAMS, SEE pg 62 b)
2. a) b)
3. a) b)
4. a) b)
5. a) b)
• Thm 28
Statements Reasons Ex 1: