Beat the Computer

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Beat the Computer!
Geometry Vocabulary for Unit 2
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• Directions
• A slide will appear with a term
• Say the definition aloud before the computer can
  answer (5 sec.)
• You will hear a sound when the slide changes

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conditional
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conditional another name for an if-then statement
If it is raining, then I will need my umbrella.
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hypothesis
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hypothesis the part following the if in an
if-then statement
If it is raining, then I will need my umbrella.
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conclusion
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conclusion the part following the then in an
if-then statement
If it is raining, then I will need my umbrella.
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truth value
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truth value the value, true or false, of a
conditional statement
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converse
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converse a new statement that switches the
hypothesis and conclusion of the original
conditional statement
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biconditional
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biconditional a statement made by connecting the
conditional and its converse with the word and
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deductive reasoning
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deductive reasoning the process of reasoning
logically from given statements to a conclusion
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vertical angles
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vertical angles two angles whose sides are
opposite rays
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2
?1 and ??2 are vertical angles
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adjacent angles
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adjacent angles two coplanar angles that share a
common vertex and side, but have no common
interior points
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1
3
4
? 1 ? 2 are adjacent angles
? 3 ? 4 are adjacent angles
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complementary angles
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complementary angles two angles whose sum
measures 90º
55?
35?
X
Y
??X ??Y are complementary
??1 ??2 are complementary
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supplementary angles
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supplementary angles two angles whose sum
measures 180º
Y
135?
1
2
X
??X ??Y are supplementary
??1 ??2 are supplementary
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linear pair
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linear pair if two adjacent angles share one
side but the two sides they do not share are not
opposite rays
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theorem
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theorem a statement that must be proved to be
true
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paragraph proof
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paragraph proof a proof written as sentences in
a paragraph