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| Part of a line that begins at one point and ends at another |
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| Part of a line that starts at a point and extends forever in one direction |
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| Figure formed by 2 rays with a common endpoint |
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| The intersetion of two lines |
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| The intersection of two planes |
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| Distance on a number line |
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| Segment addition postulate |
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| 2 angles whose sum is 180 degrees |
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| Angle whose measure is 90 degrees |
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| Angle whose measure is less than 90 degrees |
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| 2 coplanar lines that intersect to form right angles |
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| 2 coplanar lines that do not intersect |
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| 2 angles who share a common side |
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| If two coplanar lines are parallel to the same line, then... |
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Definition
| They are parallel to each other |
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| If two coplanar lines are perpendicular to the same line, then... |
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Definition
| They are parallel to each other |
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Term
| Sum of the measures of a triangle |
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Definition
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| Sum of the measures of a quadrilateral |
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Definition
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| The measures of an exterior angle of a triangle is equal to... |
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Definition
| the sum of the measures of the remote interior angles |
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| The sum of interior angles of a polygon is... |
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| The length of the midsegment of a triangle is... |
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| A segment parallel to the base of a triangles joining the midpoints of the two nonparallel sides. |
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| The length of the median of a trapezoid is |
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Definition
| One half the sum of the bases |
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| Two coplanar lines are parallel if... |
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Definition
| they have the same slope. |
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| Two coplanar lines are perpendicular if... |
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Definition
| Their slopes are opposite reciprocals of each other(or product of slopes is -1) |
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| If two sides and their included angle of one triangle are congruent to two sides and the included angle of another triangle, then... |
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Definition
| The two triangles are congruent by SAS |
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Definition
| Vertical change divided by horizonal change |
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Term
| If 2 sides of a triangle are congruent then... |
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Definition
| Opposite angles are congruent(by Isosceles triangle theorem |
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| If 2 angles of a triangle are congruent, then... |
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Definition
| th triangle is isosceles(by converse of isosceles triangle theorem) |
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| The number of square units it takes to cover a region |
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| The number of cubes it takes to fill an object |
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| The distance around an object |
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| The distance around a circle |
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| The set points equidistant from a given point is called the center |
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| One half times height times the sumb of the bases or length of midsegment times hight |
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| One half the apothem times the perimeter |
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Definition
| The sum of the square of the legs is equal to the square of the hypotenuse |
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Term
| In a 45-45-90 triangle, the hypotenuse is... |
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Definition
| Square root of 2 times longer than either leg |
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Term
| In a 45-45-90 triangle, either leg is... |
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Definition
| Square root of 2 times shorter than the hypotenuse |
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Term
| In a 30-60-90 trianle, the hypotenuse is... |
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Definition
| twices as long as the shorter leg |
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Term
| In a 30-60-90 triangle, the long leg is... |
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Definition
| Square root of 3 times longer than the short leg |
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Term
| In a 30-60-90 triangle, the short legt is... |
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Definition
| Square root of 3 times shorter than the long leg and half the leght of the hypotenuse |
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| Slope of line in standard form |
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