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Geometry Vocabulary

Name ___________________________________ 

Period  ___________  Date __________________
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Across
1
Alternate ________ angles are equal in measure and outside of parallel lines on opposite sides of the transversal
4
The type of reasoning we use in constructing proofs in Geometry
7
Angles that sum to 180°
8
Angles around a _____ sum to 360°
10
Two angles that are situated in the same way
11
Uses reasoned, logical explanations to prove
14
Next to; neighboring
16
A mathematical statement with a proof
17
Adjacent, supplementary angles that form a straight line
18
A line that cuts across a set of lines, that are often parallel
Down
2
Alternate ________ angles are equal in measure and inside parallel lines on opposite sides of the transversal
3
Same _____ interior angles sum to 180°
5
Angles that sum to 90°
6
Lines that intersect to form right angles are said to be this.
9
Exactly equal in shape, size and measure
12
An angle that measures exactly 90°
13
Lines that do not intersect and have the same slope are this
15
Congruent angles that are opposite one another at the intersection of two lines