Cornell Notes Template Geometry 1 Unit 2: Reasoning And Proof Page 12
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16Geometry 1
Unit 2: Reasoning and Proof
2.5: Proving Statements about line segments
A way of proving a statement using a numbered column of
2-column proof
statements and a numbered column of reasons for the
statements.
A true statement that is ____________ by other true
Theorem
statements
Reflexive
For any segment AB, __________ _________
Symmetric
If __________ _______ , then __________ _________
Properties of Segment
congruence
Transitive
If__________ _________and_______ _________,
then __________ _________
Triangle segment proof
In Triangle JKL,
Given: LK = 5, JK = 5, JK = JL,
Prove: LK = JL
Example 1
Statement
Reason
1.
1.
2.
2.
3.
3.
4.
4.
5.
5.
6.
6.
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