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 Complementary angleTwo angles whose measures have a sum of 90°
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#### Definitions

Complementary angle
Two angles whose measures have a sum of 90°
Supplementary angle Two angles whose measure in degrees adds up to 180 degrees.
transformations
The moving of a figure by a translation, reflection, or rotation
translation
sliding a figure from one position to another without turning or flipping the figure or movement of a figure along a straight line
and it does not change size or rotate
rotation
A movement of a figure by turning it around a fixed point
reflection
Flip A transformation in which a geometric figure is reflected across a line, creating a mirror image. That line is called the axis of reflection.
Symmetric
having similarity in size, shape, and relative position of corresponding parts and proportions are balanced
Scale
On a graph, the numbers placed at fixed distances to help label the graph & On a map the relationship between the distance on the map and the distance in real life
ex: 1 in = 50 miles
corresponding
Sides that are in the same position in different plane figures
Similar figures
Figures with the same shape but not necessarily the same size
Equal angles and proportional sides
Parallel
parallel lines
Lines in a plane that never intersect
Perpendicular
perpendicular lines
Two lines that intersect to form four right angles
Solid
An enclosed region of three-dimensional space.
base A side of a polygon or a face of a solid figure by which the figure is measured or named
Rectangular Prism A solid figure that has two congruent, Rectangle-shaped bases, and other faces that are all rectangles
Triangular Prism A solid figure that has two triangle-shaped bases, and other faces that are all rectangles
Surface area The sum of the areas of all the faces, or surfaces, of a solid figure
net An arrangement of two-dimensional figures that can be folded to make a polyhedron
Cylinder A solid figure with two parallel bases that are congruent circles
Cone A solid figure that has a circular base and one vertex

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