GEOMETRY

Polygons Circles Congruency Similarity Points Lines Planes Geometry

•D •B •N Point A position in space, has no size only location D, B and N represent points

Line AB represents a line Continues without end in opposite directions • • A B AB represents a line

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

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 • •

What are parallel lines? Parallel lines are lines that never intersect.

What are intersecting lines? Lines that cross at any point are intersecting lines.

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

Points and Lines in Real World

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

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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