Plane figure with segments for sides

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Plane figure with segments for sides
polygon
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Angles with a common vertex, common side and no
interior points in common
Adjacent angles
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A position in space with no size
point
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Two non-adjacent angles formed when two lines
intersect
Vertical angles
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Lines in the same plane that dont intersect
Parallel lines
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An angle with measure of less than 90 degrees

• Acute

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An Angle with measure equal to 90 degrees

• Right angle

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An Angle with measure greater than 90 degrees

• Obtuse Angle

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Point that divides a segment into two equal parts
midpoint
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A flat surface with no thickness that extends
indefinitely in all directions
Plane
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Union of two rays with common endpoint that are
non-collinear
Angle
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Two lines that intersect to form right angles
Perpendicular lines
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The common endpoint of two rays or segments
Vertex
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Part of a line that is bounded by one endpoint
Ray
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Two angles with a sum of 180 degrees
Supplementary Angles
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Non-coplanar lines that do not intersect
Skew lines
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A part of a line that is bounded by two endpoints
Segment
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To cut in two equal parts
bisect
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Two angles with the sum of 90 degrees
Complementary angles
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Two figures with equal measure
Congruent
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A series of points that extend in opposite
directions without end
line
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Point that divides a segment into two equal parts
midpoint
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Polygon with opposite sides that are parallel
parallelogram
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Polygon with 5 sides
pentagon
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Six sided polygon
Hexagon
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Quadrilateral with one pair of parallel sides
trapezoid
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Four sided polygon
Quadrilateral
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A segment that connects nonconsecutive vertices
of a polygon
Diagonal
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A convex polygon with all sides and angles
congruent
Regular Polygon
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A quadrilateral with four equal sides
Rhombus
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A parallelogram with 4 congruent angles.

• Rectangle

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The _________ of a trapezoid is parallel to the
bases and its measure is half the sum of the
bases.

• Median

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The non-parallel sides of a trapezoid.

• legs

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A triangle with at least two equal sides
Isosceles triangle
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Triangle with all acute angles
Acute triangle
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Triangle with one obtuse angle
Obtuse triangle
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Triangle with one right angle
Right triangle
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A segment that connects a vertex to the midpoint
of the opposite side of a triangle
median
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Any line segment from a vertex perpendicular to
the base, also the height of a figure
altitude
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A triangle with all sides equal
Equilateral triangle
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Figures with corresponding angles congruent and
corresponding sides in equal ratios
Similar
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A triangle with no equal sides
Scalene triangle
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A ________ polygon has an exterior angle sum of
360 degrees.

• Convex

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The _________ angle sum of a convex polygon with
n sides is given by the formula

• Interior