McDougal Littell Vocab.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| A segment, ray, line, or segment that is perpendicular to a side of a triangle at the midpoint of the side. | perpendicular bisector
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| The same distance from one point as from another point. | equidistant from two points
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| The length of the perpendicular segment from the point to the line. | distance from a point to a line
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| The same distance from one line as from another line. | equidistant from two lines
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| A line, ray, or segment that is perpendicular to a side of a triangle at the midpoint of the side. | perpendicular bisector of a triangle
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| Three or more lines that intersect in the same point. | concurrent lines
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| The point of intersection of concurrent lines. | point of concurrency
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| The point of concurrency of the perpendicular bisector of a triangle. | circumcenter of a triangle
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| A bisector of an angle of the triangle. | angle bisector of a triangle
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| The point of concurrecy of the angle bisectors of a triangle. | incenter of a triangle
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| A segment whose endpoints are a vertex of the triangle and the midpoint of the opposite side. | median of a triangle
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| The point of concurrency of the medians of a triangle. | centroid of a triangle
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| The perpendicular segment from a vertex of a triangle to the opposite side or to the line that contains the opposite side. | altitude of a triangle
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| The point of concurrency of the lines containing the altitudes of a triangle. | orthocenter of a triangle
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| A segment that connects the midpoints of two sides of a triangle. | midsegment of a triangle
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| A proof in which you prove that a statement is true by first assuming that its opposite is true. If this assumption leads to an impossibility, then you have proved that the original statement is tre. | indirect proof
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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Created by:
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