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STANDARD G.CO.C.9
GEO

Prove theorems about lines and angles. Theorems include: vertical angles are congruent; when a transversal crosses parallel lines, alternate interior angles are congruent and corresponding angles are congruent; points on a perpendicular bisector of a line segment are exactly those equidistant from the segment’s endpoints.

WORKSHEETS Regents-Lines and Angles 1
GEO
6 TST
PDF
DOC
TNS
Regents-Lines and Angles 2
GE
14 TST
PDF
DOC
TNS
Regents-Lines and Angles 3
A
28 TST
PDF
DOC
TNS
Regents-Line and Angle Proofs
GE
3 TST
PDF
DOC
TNS
Practice-Lines and Angles 1 5 WS
PDF
Practice-Lines and Angles 2 10 WS
PDF
Practice-Lines and Angles 3 10 WS
PDF
Practice-Lines and Angles 4 20 WS
PDF
Practice-Lines and Angles 5 6 WS
PDF
Practice-Line and Angle Proofs 6 WS
PDF
RELATED TOPICS
Negations
GE
10 TST
PDF
DOC
TNS
Compound Statements
GE/A
6/25 TST
PDF
DOC
TNS
Inverse, Converse, Contrapositive and Conditional Statements 1a
GE/A
MC
12/28 TST
PDF
DOC
TNS
Inverse, Converse, Contrapositive and Conditional Statements 1b
GE/A
bimodal
TST
PDF
DOC
Regents-Logic Tables
A
3 TST
PDF
DOC
TNS
Regents-Indirect Proofs
B
5 TST
PDF
DOC
TNS
Practice-Statements 10 WS
PDF
Practice-Compound Statements 1 6 WS
PDF
Practice-Compound Statements 2 9 WS
PDF
Practice-Compound Statements 3 10 WS
PDF
Practice-Compound Statements 4 6 WS
PDF
Practice-Inverse 5 WS
PDF
Practice-Converse 10 WS
PDF
Practice-Contrapositive 6 WS
PDF
Practice-Indirect Proof 5 WS
PDF
Practice-Mathematical Induction 4 WS
PDF
VIDEOS Identifying collinear points VID
Naming lines, segments, and rays VID
Identifying parallel or skew lines
Relating parallel and perpendicular lines VID
Classifying angles VID
Identifying angle pairs VID
Using the Vertical Angles Theorem VID
Using the Congruent Supplements Theorem
Using the segment addition postulate VID
Using the angle addition postulate VID
Writing biconditionals VID
Separating a biconditional into parts
Writing a definition as a biconditional
Recognizing good definitions
Using inductive reasoning VID
Finding a counterexample
Using the Law of Detachment VID
Using the Law of Syllogism
Writing a conditional statement VID
Finding a counterexample to a conditional statement
Using converses of conditional statements VID
Using converses of conditional statements VID
Writing biconditionals VID
Separating a biconditional into parts
Writing a definition as a biconditional
Recognizing good definitions
Using indirect proof VID
 
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