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Gravity
Terms in this set (18)
Lines
A straight path of points that has no endpoints.
Rays
A part of a line that has one endpoint and continues in one direction infinitely.
Line segments
A part of a line with two endpoints.
Angle
A figure formed by two rays with a common endpoint, called the vertex. The rays are called sides.
Acute angles
An angle with a measure less than 90°.
Right angle
An angle with a measure of 90°.
Obtuse angles
An angle with a measure greater than 90° and less than 180°.
Straight angles
An angle with a measure of 180°.
Parallel lines
Never cross because they are always the same distance apart
Conplementary angles
Two angles whose measures have a sum of 90°.
Supplementary angles
Two angles whose measures have a sum of 180°.
Corresponding angles
Angles that are in the same position from one line to the other. (Congruent)
Vertical angles
A pair of opposite congruent angles formed by intersecting lines. (Congruent)
Adjacent Angles
Angles that have:
~a common side
~a common vertex
~No common interior points (Supplementary)
Alternate Interior Angles
Pairs of non-adjacent angles both interior and on opposite sides of the transversal. (Congruent)
Alternate Exterior Angles
Pairs of non-adjacent angles both exterior and on opposite sides of the transversal. (Congruent)
Perpendicular Lines
Form right angles when they intersect each other
Transversal Line
Intersects two or more lines at different points
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