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Math
Geometry
Geometry Lesson 3.1-3 Transversals
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Terms in this set (16)
Alternate Interior Angles
Congruent angles formed by parallel lines cut by a transversal that are both between the parallel lines and on opposite sides of the transversal line.
Alternate Exterior Angles
Congruent angles formed by parallel lines cut by a transversal that are both outside the parallel lines and on opposite sides of the transversal line.
Corresponding Angles
Congruent angles formed by parallel lines cut by a transversal that are both on the same side of the transversal line but one is between the parallel lines while the other is outside the parallel lines.
Vertical Angles
Congruent angles formed by parallel lines cut by a transversal that share a vertex. These are across a vertex from each other and form a "bow tie".
Congruent Angles
Angles that are the same degrees.
Complementary Angles
Two or more angles that form a right angle (add up to 90 degrees).
Supplementary Angles
Two or more angles that form a straight angle (add up to 180 degrees).
Consecutive Interior Angles
Supplementary angles formed by parallel lines cut by a transversal that are both on the same side of the transversal line and between the parallel lines. One will be acute and one will be obtuse.
Consecutive Exterior Angles
Supplementary angles formed by parallel lines cut by a transversal that are both on the same side of the transversal line and outside the parallel lines. One will be acute and one will be obtuse.
Adjacent Angles
Supplementary angles formed by parallel lines cut by a transversal that are next to each other. They will share a vertex and ray. One will be acute and one will be obtuse.
Right Angle
90 degree angle
Acute Angle
an angle that is < 90 degrees
Obtuse Angle
an angle that is > 90 degrees and < 180 degrees
Straight Angle
180 degree angle
Parallel Lines
Lines that run next to each other and never intersect.
Transversal Line
Line that crosses two or more parallel lines.
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