Unit 1 Dictionary: Geometry basics

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Last updated 12:45 PM on 8/17/26
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9 Terms

1
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Point

a location. No size, no shape

<p>a location. No size, no shape</p>
2
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Line

Made up of points,

has no thickness

<p>Made up of points,</p><p>has no thickness</p>
3
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line segment

A portion of a line with 2 endpoints names by the endpoints

<p>A portion of a line with 2 endpoints names by the endpoints</p>
4
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ray

a line that extends indefinetely on 1 end

<p>a line that extends indefinetely on 1 end</p>
5
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plane

a flat surface made up of points that extends indefinitely in all directions

<p>a flat surface made up of points that extends indefinitely in all directions</p>
6
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collinear

points that lie on the same line

<p>points that lie on the same line</p>
7
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coplanar

points that lie on the same line.

<p>points that lie on the same line.</p>
8
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congruent segments

same size, same shape- segments w/ same measure

<p>same size, same shape- segments w/ same measure</p>
9
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segment addition postulate

if A,B and C are collinear and B is between A and C… AB+BC=AC

<p>if A,B and C are collinear and B is between A and C… AB+BC=AC</p>