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Length

Geometry Theorems and Postulates for a Midterm

Subject: 
Geometry
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Mathematics
Elementary geometry
Distance
Length
Axiom
Constructible universe
Line segment
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midterm geometry notes

DEFINITIONS?Def. line segment (segment) - part of a line that has 2 definite endpoints?Def. ray - part of a line that starts with a definite endpoint and extends indefinitely in 1 direction?Def. angle - the union of 2 noncollinear rays with a common endpoint?Def. union - elements belonging in 1 or both sets?Def. intersection - elements that belong to both sets?Def. absolute value - |x| = if x _>_ 0; -x if x _<_ 0?Def. segment length - the distance between the endpoints?Def. congruent segments - segments with the same length?Def. midpoint - a point B is called the midpoint of lineAC if A - B - C and AB = BC?Def. segment bisector - a point, line, ray, segment, or plane that passes through the midpoint of a line?Def.

light mechanical model

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Chemistry
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Physics
Measurement
Calculus
Wave mechanics
Physical quantities
Waves
Length
Wavelength
Frequency
Wave
Light
CNote
Technology
the amplitude of a wave is the wave's height from zero to the crest. the wavelength is the distance between the crests. the frequency is the number of wave cycles to pass a given point per unit of time. the SI unit of cycles per second is called hertz (Hz). the wavelength snf frequency of light are inversely proportionate to each other. the product of the frequency and wavength is always a constant (c), the speed of light.
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