Geometric Proof Methods
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The Setup
Every proof starts with a GIVEN statement (what we know) and a PROVE statement (our goal).
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Tap the GIVEN statement
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Tap the PROVE statement
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Perfect Setup!
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Drag the correct Reasons to justify each statement in this Two-Column Proof.
Statements
Reasons
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Drag here
Reasons Bank
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swap_horiz Flowchart Proof: Tap two boxes to swap their statements. Form a logical chain!
edit_document Complete the Paragraph Proof by selecting the correct terms.
We are given that ∠1 and ∠2 are
.
This means by definition that m∠1 + m∠2 =
.
We are also given that m∠1 = {{ s4TextValues.val }}°. By the
Property, we can replace m∠1 to write {{ s4TextValues.val }}° + m∠2 = 180°. Finally, using the
Property of Equality, we subtract {{ s4TextValues.val }}° from both sides to conclude that m∠2 = {{ s4TextValues.comp }}°.
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Proof Complete!
You've mastered identifying given statements, structuring two-column proofs, building logical flowcharts, and writing paragraph proofs!