Flashcards in 2.1 Exploring Patterns Deck (12):

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## Line Segment

### AB consists of the endpoints A and B and all the points on the line AB that lie between A and B

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## Ray

### The ray AB consists of the initial point A and all the points on the line AB that lie on the same side of A and B lies

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## Opposite Rays

### On the line AB if C is between A and B, then CA and BC are opposite rays

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## Collinear

### Points, segments, or rays that lie on the same line are collinear

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## Angle

### An angle consists of two different rays that have the same initial point. The rays are the sides of the angle and the initial point is the vertex of the angle

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## Acute Angle

### An angle whose measure is greater than 0 and less than 90

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## Obtuse Angle

### An angle whose measure is greater than 90 and less than 180

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## Right Angle

### An angle whose measure is 90

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## Straight Angle

### An angle with a measure of 180

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## Interior of an Angle

### Every non-straight angle has an interior. A point D is in the interior of angle A If it is between points that lie on each side of the angle

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## Exterior of an Angle

### Every non-straight angle has an exterior. A point D is in the exterior of angle A if it is NOT on the angle or in the interior of the angle

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