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10 Cards in this Set
- Front
- Back
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postulate
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a rule that is excepted withough proof is called a postulate
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coodinate
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the real # that correspoinds to a point if the coordinate of the point
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distance
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absolute value of the difference of the coodinates of A and B.
<--A*---------*B---> |
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ruler postulate
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the points on a line can be matched one to one with real numbers.
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segment addition postulate
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if B is between A and C, then AB + BC= AC
If AB+BC=AC |
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congruent segments
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segments that have the same lenght
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Midpoint
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the midpoint of a segment is the point that divides the segment into two congruent segemnts.
*----I---*b----I----*C b is midpoint |
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Segment bisector
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a point, ray, line, line segments or plane tht intersects the segment at its midpoint.
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midpoint formula
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[X1+X2, Y1+Y2]
[-----, ------] [ 2 , 2 ] |
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distance formula
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AB= (X2-X1)^2 + (Y2-Y1) ^ 2
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