Ch. 5/6 Test ReviewHonors Geometry

5.1 Indirect Proofs

Assume opposite of givenShow contradiction Make conclusion

*** Make sure to note that you are ASSUMING the opposite of the prove statement!

*** The Given cannot change!!

5.2/5.3: Parallel Lines

Identify alternate interior, alternate exterior, corresponding, same side interior, same side exterior angles in diagrams

Identify which lines can be proved parallelIdentify which angles can be proved

congruent or supplementaryWrite/solve equations involving parallel

line anglesExterior Angle > Either Remote Int. Angle“Crook Problems”

6.1-6.3 3D Relationships

Review T/F scenarios from class and quizRead 6.1-6.3 carefully!Ways to Determine a plane

◦Three noncollinear points◦A line and a point not on that line◦Two intersecting lines◦Two parallel lines

Know plane relationships from 6.3Remember that the term “line” refers to a

STRAIGHT lineT/F: Model scenarios… look for counter-

examples

Prove Line Perpendicular to Plane

If a line is perpendicular to two distinct lines in a plane passing through its foot, then it is perpendicular to the plane

If a line is perpendicular to a plane, then it is perpendicular to all lines in the plane passing through its foot.