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GEOMETRY

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Polygons Circles Congruency Similarity Points Lines Planes Geometry

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**•D •B •N Point A position in space, has no size only location**

D, B and N represent points

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**Line AB represents a line Continues without end in opposite directions**

• • A B AB represents a line

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**Segment DE represents a segment**

Part of a line made up of 2 points and all the points of the line between the 2 points • • D E DE represents a segment

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Ray Part of a line consisting of one endpoint and all the points of the line on one side of the endpoint F G FG represents a ray • •

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**What are parallel lines?**

Parallel lines are lines that never intersect.

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**What are intersecting lines?**

Lines that cross at any point are intersecting lines.

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**What are perpendicular lines?**

Two lines that cross to form a right angle are intersecting lines.

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**Points and Lines in Real World**

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**VERTEX A VERTEX is a fancy name for “angle”**

Two rays or lines that have the same endpoint make a VERTEX/angle VERTEX/angles are measured in “degrees” When two lines cross, they make vertex/angles The Corners of a square are its vertex/angles

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**The Hershey & Crunch Bar are a Congruent size**

CONGRUENT means the “same” CONGRUENT LINE SEGMENTS means two line segments are the same CONGRUENT Vertex/Angles means two angles are the same ● ● ● ● The Hershey & Crunch Bar are a Congruent size

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**Open your etextbook on page 33.**

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