### Chapter 7 Vocabulary Words

Semira Ali

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Across
1.The Theorem that states that the measure of the angles in a triangle add up to 180°.
5.a line that has two of more lines
6.or line segment, is the part of a line between two points.
7.measures greater than 0° and less than 90°
12.measures greater than 90° and less than 180°
13.is perfectly straight and extends forever in both directions.
14.is part of a line that starts at one point and extends forever in one direction.
16.are two angles whose measures add to 90°.
19.has no congruent sides and no congruent angles.
20.measures 90°
21.has 1 right angle.
22.are always congruent angles
Down
2.has 3 congruent sides and 3 congruent angles
3.has at least 2 congruent sides and 2 congruent angles.
4.lines that intersect at 90° angles.
7.is formed by two rays with a common endpoint called the vertex (plural, vertices).
8.has 1 obtuse angle.
9.are lines in a plane that never meet.
10.names a location.
11.are two angles whose measures add to 180°.
15.has 3 acute angles.
17.is a perfectly flat surface that extends forever in all directions.
18.figures have the same size and shape.

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