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Geometry
Transformations
Triangles Lines Angles Grab Bag
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Jeopardy
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Geometry
A transformation in which a figure is turned
around a point.
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What is a rotation?
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A movement (slide) of a figure along a straight
line.
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What is a translation?
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A transformation that enlarges or reduces a
figure.
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What is a dilation?
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A transformation of a figure that flips the figure
across a line.
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What is a reflection?
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A change in the size or position of a figure.
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What is a transformation?
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A polygon with three sides.
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What is a triangle?
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A triangle with two congruent sides.
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What is an isosceles triangle?
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A triangle with no congruent sides.
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What is a scalene triangle?
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A triangle with three congruent sides.
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What is an equilateral triangle?
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A triangle with one right angle.
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What is a right
triangle?
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A location in a plane or in space, having no
dimensions.
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What is a point?
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Point A
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•
Two points on a line and all the points
between those two points.
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What is a line segment?
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Segment AB or AB
Part of a line having one endpoint and extending
to infinity in one direction.
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What is a ray?
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Ray AB or AB
A straight path that extends into infinity in opposite directions.
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What is a line?
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Line AB or AB
A B• •
A flat surface that stretches into infinity.
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What is a plane?
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Image courtesy of: http://www.electrostatics3d.com/geo
The union of two rays having a common
endpoint called the vertex.
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What is an angle?
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ABC
An angle that measures 90°.
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What is a right angle?
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An angle that measures 180°.
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What is a straight angle?
A positive angle measuring less than 90
degrees.
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What is an acute angle?
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An angle whose measure is greater
than 90° but less than 180°.
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What is an obtuse angle?
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Lines that have one and only one point in
common.
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What are intersecting lines?
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Two lines that lie in the same plane and never
intersect.
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What are parallel lines?
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line m line l
m
l
Lines that intersect to form right angles.
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What are perpendicular lines?
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line m line lm
l
Figures or angles that have the same size and
shape.
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What is congruent?
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Having the same shape and corresponding
sides that are proportional.
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What is similar?
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Remember: considering a scale factor of 1, all congruent figures are similar;
however, not all similar figures are congruent.
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Category: Transformatio
ns
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The ratio used to enlarge or reduce similar figures.
What is scale factor?
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