TOOLS OF GEOMETRY UNIT 1. POINTS, LINES, AND PLANES Essential Understanding: Geometry is a...

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TOOLS OF GEOMETRY UNIT 1

Transcript of TOOLS OF GEOMETRY UNIT 1. POINTS, LINES, AND PLANES Essential Understanding: Geometry is a...

Page 1: TOOLS OF GEOMETRY UNIT 1. POINTS, LINES, AND PLANES Essential Understanding: Geometry is a mathematical system built on accepted facts, basic terms, and.

TOOLS OF GEOMETRY

UNIT 1

Page 2: TOOLS OF GEOMETRY UNIT 1. POINTS, LINES, AND PLANES Essential Understanding: Geometry is a mathematical system built on accepted facts, basic terms, and.

POINTS, LINES, AND PLANESEssential Understanding: Geometry is a mathematical system built on accepted facts, basic terms, and definitions

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The terms point, line, and plane are not defined because their definitions would require terms that also need defining. You can, however, use undefined terms to define other terms. A geometric figure is a set of points. Space is the set of all points in three dimensions. Similarly, the definitions for segment and ray are based on points and lines.

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SEGMENTS AND RAYS

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POSTULATE: A postulate or axiom is an accepted statement of fact. Postulates, like undefined terms, are basic building blocks of the logical sys in geometry

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If two planes intersect, then they intersect in exactly one line.

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POSTULATE 4

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Through any three noncollinear points, there is exactly one plane.

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Ruler Postulate

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Segment

Addition

Postulate

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Midpoint

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Constructing Congruent Segments

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Perpendicular Bisector

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Constructions

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Show what you knowPg. 23 & 37

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