Glossary- Acute Angle
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an angle that measures any where from 0º to 89º
- Adjacent angles
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two angles that have a common side and vertex
- Alternate exterior angles
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nonadjacent angles on opposite sides of the transversal and on the outside of the lines
- Alternate interior angles
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nonadjacent angles that are on opposite sides of the transversal that are on the inside of the parallel lines.
- Complementary Angles
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two angles that add up to 90º
- Congruent
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equal. When two angles are congruent, they are the same size.
- Corresponding angles
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when two lines are intersected by a transversal the angles are in matching corners
- Intersecting lines
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two lines that cross at a single point
- Obtuse Angle
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an angle that measures anywhere from 91º to 179º
- Parallel Lines
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two lines that never cross or intersect because they have an equal distance between them.
- Pythagorean Theorem
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an equation used to find the area of a right triangle
- Ray
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a side or arm of an angle
- Right Angle
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an angle that measures exactly 90º
- Straight Angle
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an angle that measures exactly 180º
- Supplementary Angles
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two angles that add up to 180º or a straight angle.
- Transversal
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a line that intersects at least two other lines
- Vertex
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a point where two or more rays meet
- Vertical Angles
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two angels that are opposite each other when two lines intersect.
