# Angles

## Terms

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- congruent
- same size, same shape
- obtuse angle
- an angle between 90 and 180 degrees
- straight angle
- an angle of 180 degrees
- interior
- the region that is inside of something
- angle
- a figure formed by 2 rays meeting at the same endpoint
- exterior
- the region that is outside of something
- acute angle
- an angle less than 90 degrees but more than 0 degrees
- right angle
- an angle measuring 90 degrees
- degrees
- a unit used to measure angles
- ray
- A part of a line, with one endpoint, that continues without end in one direction
- adjacent
- two angles which share a common ray, common vertex, and do not overlap
- vertex
- The point where two or more rays meet;