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2013-8thMathPTVocab1

SHMS 8th Grade Math Powertime Vocab 1

TermDefinition
Alternate Exterior Angles Pairs of angles formed when a third line (a transversal) crosses two other lines. These angles are on opposite sides of the transversal and are outside the other two lines. When the two other lines are parallel, the alternate exterior angles are equal.
Alternate Interior Angles Pairs of angles formed when a third line (a transversal) crosses two other lines. These angles are on opposite sides of the transversal and are in between the other two lines. When the two other lines are parallel, the alternate interior angles are equal.
Angle of Rotation The amount of rotation about a fixed point.
Congruent Figures Figures that have the same size and shape.
Corresponding Sides Sides that have the same relative positions in geometric figures.
Corresponding Angles Angles that have the same relative positions in geometric figures.
Dilation Transformation that changes the size of a figure, but not the shape.
Linear Pair Adjacent, supplementary angles. Excluding their common side, they form a straight line.
Reflection A transformation that "flips" a figure over a line of reflection.
Rotation A transformation that turns a figure about a fixed point through a given angle and a given direction.
Same-Side Interior Angles Pairs of angles formed when a third line (a transversal) crosses two other lines. These angles are on the same side of the transversal and are between the other two lines. When the two other lines are parallel, same-side interior angles are supplementary.
Same-Side Exterior Angles Pairs of angles formed when a third line (a transversal) crosses two other lines. These angles are on the same side of the transversal and are outside the other two lines. When the two other lines are parallel, same-side exterior angles are supplementary.
Scale Factor The ratio of any two corresponding lengths of the sides of two similar figures.
Similar Figures Figures that have the same shape but not necessarily the same size.
Transformation The mapping, or movement, of all the points of a figure in a plane according to a common operation.
Translation A transformation that "slides" each point of a figure the same distance in the same direction.
Transversal A line that crosses two or more lines.
Created by: hbogue