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32 Cards in this Set
- Front
- Back
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Point |
A location in space, with no dimensions |
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Line |
A series of points that extend into infinity, has one dimension- Length |
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Plane |
A flat surface that extends in all directions, has two dimensions- Length and Width. |
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Collinear Points |
2+ points on the same line |
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Line Segment |
Consists of two end points and all the points that lie in-between |
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Ray |
Has one end point and all other points extend into infinity |
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Intersections |
If two geometric figures intersect, if they have one or more points in common |
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Coplanar |
Points on the same plane |
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Endpoints |
The points at the end of a segment |
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Postulate |
A rule accepted with out proof |
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Postulate 1- Ruler Postulate |
Points on a line can be matched up with real numbers |
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Distance |
The space between points |
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Postulate 2- Segment Addition Postulate |
If B is between A and C, then AB+BC=AC. |
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Congruent Segments |
Segments that have the same length |
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Midpoint |
The point that divides the segment into two equal parts |
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Segment Bisector |
A point, line, ray, segment, or plane that intersects the segment at the midpoint |
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Angle Addition Postulate |
If P is in the inter of <RST, then the measure of <RST is equal to the sum of the measures of <RSP and <PST |
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Congruent Angles |
Two angles are congruent if they have the same measures |
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Angle Bisector |
A ray that divides an angle into two angles that are congruent |
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Complementary Angles |
Two angles who's sum equals 90' |
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Supplementary Angles |
Two angles who's sum equals 180' |
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Adjacent Angles |
Two angles who share a common side |
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Linear Pair |
Two adjacent angles that are supplementary |
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Vertical Angles |
Angles who's sides form two pairs of opposite rays |
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Conjecture |
an unproven statement that is based on observations |
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Inductive Reasoning |
When you find a pattern in specific cases and then write a conjecture for the general case |
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Counter Example |
A specific case where the conjecture is fake |
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Perpendicular Lines |
If two lines intersect to form four right angles |
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Inverse the Conditional Statement |
Negate hypothesis and conclusion |
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Converse the Conditional |
Switch hypothesis and conclusion |
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Contrapositive the Conclusion Statement |
Write the converse and Inverse |
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Bi- conditional Statement |
When a conditional statement and its converse are both true |
