Investigating Geometry: Lines

Henrico County Public Schools

Lessons
2-1: Conditional Statements
2-2: Logic
2-3: Pairs of Lines
2-4: Angles & Parallel Lines
2-5: Proving Lines Parallel

Unit Two: Lines

• 2-1 Objective: SOL G.1 a,b: The student will construct and judge the validity of a logical argument consisting of a set of premises and a conclusion. This will include (a) identifying the converse, inverse, and contrapositive of a conditional statement and (b) translating a short verbal argument into symbolic form.


• 2-2 Objective: SOL G.1 c,d: The student will construct and judge the validity of a logical argument consisting of a set of premises and a conclusion. This will include (c) using Venn diagrams to represent set relationship and (d) using deductive reasoning.


• 2-3 Objective: The student will be able to determine if a pair of lines are parallel, perpendicular, skew or oblique.


• 2-4 Objective: SOL G.2 c: The student will use the relationships between angles formed by two lines cut by a transversal to (c) solve real-world problems involving angles formed when parallel lines are cut by a transversal.


• 2-5 Objective: SOL G.2 a,b: The student will use the relationships between angles formed by two lines cut by a transversal to (a) determine if two lines are parallel; (b) verify the parallelism, using algebraic and coordinate methods as well as deductive proofs.

Sketchpad Help

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C.a.R. Help

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GeoGebra Help

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January 2006