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An angle whose measure is less than 90° |
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| An angle whose measure is greater than 90° and less than 180° |
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| An angle whose measure is exactly 90° |
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| An angle whose measure is exactly 180° - a straight line |
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| A long, narrow mark or band |
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| A precise location or place on a plane. Usually represented by a dot. |
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| A portion of a line which starts at a point and goes off in a particular direction to infinity |
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| A set of dots that lie in a straight line. |
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| Two things are complementary when they add up to a 90 degree angle. |
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| two things are supplementary when they add up to 180 degrees |
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| bisection is the division of something into two equal or congruent parts, usually by a line |
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| Each of the pairs of opposite angles made by two intersecting lines. |
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| Two angles that share a common side and a common Vertex, but do not overlap |
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| Angle Addition Postulate states that if a point S lies in the interior of ∠PQR, then ∠PQS + ∠SQR = ∠PQR. |
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Corresponding angles are created where a transversal crosses other (usually parallel) lines. The corresponding angles are the ones at the same location at each intersection. |
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| Alternate Interior Angles |
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Alternate Interior Angles are created where a Transversal crosses two (usually parallel) lines. Each pair of these angles are inside the parallel lines, and on opposite sides of the transversal. |
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| Alternate Exterior Angles |
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Alternate Exterior Angles are created where a transversal crosses two (usually parallel) lines. Each pair of these angles are outside the parallel lines, and on opposite sides of the transversal. |
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| When two parallel lines are intersected by a transversal, one type of angles formed is same side interior angles. |
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Lines are parallel if they lie in the same plane, and are the same distance apart over their entire length |
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| Planes that never intersect each other are known as Parallel Planes. |
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| A line is perpendicular to another if it meets or crosses it at right angles (90°). |
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| A line that cuts across two or more (usually parallel) lines |
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| A conditional statement, symbolized by p[image]q, is an if-then statement in which p is a hypothesis and q is a conclusion. |
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| Hypothesis is the part of a conditional statement just after the word if. |
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| A conclusion is the "then" part of a conditional statement. |
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| to talk informally with another or others; exchange views, opinions, etc. |
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| Counterexample is an example that is used to disprove a statement. |
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| Opposite or contrary in position, direction, order, or effect. |
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A proposition derived by negating and permuting the terms of another, equivalent proposition; for example, All not-Y is not-X is the contrapositive of All X is Y.
Read more: http://www.answers.com/topic/contrapositive#ixzz23V5MX0T5 |
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A statement that one of two propositions is true if and only if the other is true
Read more: http://www.answers.com/topic/biconditional-statement#ixzz23V5iLJfb |
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| An amount of space between two things or people. |
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| Each of a group of numbers used to indicate the position of a point, line, or plane. |
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| The point in a titration at which a reaction is complete, often marked by a color change |
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| A point somewhere in the middle. |
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The theorem that the sum of the squares of the lengths of the sides of a right triangle is equal to the square of the length of the hypotenuse. |
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| A triangle with a right angle. |
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| The longest side of a right triangle, opposite the right angle |
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| In a right triangle, a leg is either of the two sides that form the right angle. |
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