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Plane figure with segments for sides. polygon. Angles with a common vertex, common side and no interior points in common. Adjacent angles. A position in space with no size. point. Two non-adjacent angles formed when two lines intersect. Vertical angles.
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Angles with a common vertex, common side and no interior points in common Adjacent angles
Two non-adjacent angles formed when two lines intersect Vertical angles
Lines in the same plane that don’t intersect Parallel lines
An Angle with measure equal to 90 degrees Right angle
An Angle with measure greater than 90 degrees Obtuse Angle
A flat surface with no thickness that extends indefinitely in all directions Plane
Union of two rays with common endpoint that are non-collinear Angle
Two lines that intersect to form right angles Perpendicular lines
Two angles with a sum of 180 degrees Supplementary Angles
Non-coplanar lines that do not intersect Skew lines
To cut in two equal parts bisect
Two angles with the sum of 90 degrees Complementary angles
Two figures with equal measure Congruent
A series of points that extend in opposite directions without end line
Polygon with opposite sides that are parallel parallelogram
Polygon with 5 sides pentagon
Six sided polygon Hexagon
Four sided polygon Quadrilateral
A segment that connects nonconsecutive vertices of a polygon Diagonal
A convex polygon with all sides and angles congruent Regular Polygon
A parallelogram with 4 congruent angles. Rectangle
The _________ of a trapezoid is parallel to the bases and its measure is half the sum of the bases. Median
A triangle with at least two equal sides Isosceles triangle
Triangle with all acute angles Acute triangle
Triangle with one obtuse angle Obtuse triangle
Triangle with one right angle Right triangle
A segment that connects a vertex to the midpoint of the opposite side of a triangle median
Any line segment from a vertex perpendicular to the base, also the height of a figure altitude
A triangle with all sides equal Equilateral triangle
Figures with corresponding angles congruent and corresponding sides in equal ratios Similar
A triangle with no equal sides Scalene triangle
A ________ polygon has an exterior angle sum of 360 degrees. Convex
The _________ angle sum of a convex polygon with “n” sides is given by the formula: Interior