h_basic_geometry_review

# h_basic_geometry_review - Basic Geometry Review Basic...

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16 June 2010 Ventura College Mathematics Department 1 Basic Basic Geometry Geometry Review Review For Trigonometry Students

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16 June 2010 Ventura College Mathematics Department 2 Undefined Geometric Terms Undefined Geometric Terms Point A Line Plane ABC accA AB
16 June 2010 Ventura College Mathematics Department 3 Half Half - - lines (Rays) lines (Rays) c This is a ray named c Point A is the “vertex” or “endpoint” of the ray; write the name of the endpoint first c Definition: is the set of all points C on such that A is not strictly between B and C ccca AB ccca AB Acca AB

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16 June 2010 Ventura College Mathematics Department 4 Line Segments Line Segments c The green portion is line segment c Points A and B are “endpoints”; the distance between them is written AB (without the line segment over it) c Definition: is bounded by endpoints A and B ; it contains every point on that is between endpoints A and B AB accA AB AB
16 June 2010 Ventura College Mathematics Department 5 Circles (1 of 5) Circles (1 of 5) c Definition: A circle is the set of all points lying in a plane at a fixed distance r (the “radius”) from a given point (the “center” of the circle) c A “diameter” d is any line segment whose endpoints lie on the circle, and which passes through (contains) the center of the circle

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16 June 2010 Ventura College Mathematics Department 6 Circles (2 of 5) Circles (2 of 5) c A “ secant line ” is any line that touches the circle at exactly two points c A “ tangent line ” is any line that touches the circle at exactly one point c A “ chord ” is any line segment whose endpoints lie on the circle, but which does not pass through the exact center of the circle
16 June 2010 Ventura College Mathematics Department 7 Circles (3 of 5) Circles (3 of 5) c The “circumference” is the full outer edge of the circle, or the length of it c An “ arc ” is any continuous portion of the circumference c A “ sector ” is the wedge-like shape bounded by two radii and the arc that lies between them c A “ segment ” is the shape formed by a chord and the arc that extends between its endpoints

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16 June 2010 Ventura College Mathematics Department 8 Circles (4 of 5) Circles (4 of 5) c Formulas: Diameter: d = 2 r Circumference: C = 2 π r = π d Area: A = π r 2 “Pi”: C π 3.141592653589793238… C π = C/d
16 June 2010 Ventura College Mathematics Department

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## This note was uploaded on 01/17/2012 for the course MATH V04 taught by Professor Michaelbowen during the Spring '12 term at Ventura College.

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h_basic_geometry_review - Basic Geometry Review Basic...

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