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Definition
| Two angles that have a common side and a common vertex and don't overlap |
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| If point S is in the interior of ∠ PQR , then the measure of m∠ SQR = m∠ PQR |
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Definition
| two rays with the same endpoint |
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| The endpoint where the angle meets |
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Definition
| The sum of two (or more) angles is less than 90 degrees |
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Definition
| The sum of two (or more) angles is 180 degrees |
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Definition
| Supplementary angles are adjacent and form a straight line |
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Definition
| points hat lay on the same plane |
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Definition
| extends indefinitely in both directions and has no thickness; infinitely many points; can be named by a <-> over any two points on the line or by a single lower case letter |
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Definition
| a portion of a line named by its endpoints |
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Term
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Definition
| one end point and extends indefinitely in one direction. Its named by the end point and any other point on the ray. An arrow is written on the top of the two letters with the endpoint listed first |
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Definition
| two rays that have one common end point and form a straight line |
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Definition
| flat surface; no thickness and extends indefinitely in all directions; can be named by 3 collinear points or a single cursive letter |
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Term
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| a statement that is accepted as true without proof |
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Term
| Segment Addition Postulate |
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Definition
| If point R is between P and Q, then PR+RQ= PQ |
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Term
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Definition
| two lines that meet in a 90 degree angle |
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