GEOMETRY GLOSSARY

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Title Description
Magnitude, Powers of Ten Often when we compare the multiplication by various powers of ten we speak of the magnitude of the effect of the multiplication.
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Major Axis Certain conic sections have a Major Axis, a line (segment) between vertices.
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Measure A noun or verb, Measure implies comparison to an established standard.
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Measurement The result from comparison to an established standard, Measurement may be exact only to an agreed-to precision.
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Median, Trapezoid The average of the lengths of the bases of a trapezoid.
The Median is a line segment parallel to and equidistant from the bases.
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Median, Triangle A triangle has three Medians, each a line segment from a vertex to the midpoint of the opposite side of the triangle.
Medians are concurrent at the centroid.
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Midpoint Every line segment (or side of a polygon) contains a point equidistant from the endpoints (or vertices), the Midpoint.
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Minimize A process to establish the least extent, value, or size possible.
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Minor Axis A line or line segment specific to certain conic sections.
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Minute, Angle For angles, one Minute is one-sixtieth of a degree.
One Minute is equivalent to 1/21600 of a circular rotation.
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Mode While Mode can take on several meanings in mathematics, it generally is used for the value of data with the greatest frequency of occurrence in a list of values.
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Modus Ponens We have "If A, then B." Modus Ponens is a piece of logic that goes like this: if we know A to be true, then we know that B must be true, too.
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Modus Tollens Begin with "If A, then B." That's a given.
We (somehow) know that B is false.
We then may infer (but not conclude) that A is false.
Modus Tollens is not particularly robust; it is not entirely dependable.
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Multiplicative Inverse Another name for Multiplicative Inverse is reciprocal.
Reciprocals multiply to one.
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