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5th Grade Math Unit 4 Vocab Part 1
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Gravity
Terms in this set (16)
Line Segment
a part of a line that includes two points called endpoints and all the points between them.
Line
a straight path in a plane, extending in both directions with no endpoints.
Ray
a part of a line that has one endpoint and continues without end in the other direction.
Right Angle
an angle that forms a square corner and has a measure of 90°.
Acute Angle
an angle that measures less than 90°.
Obtuse Angle
an angle that measures greater than 90° but less than 180°.
Straight Angle
an angle that measures 180°.
Decagon
a polygon with 10 sides and 10 angles.
Hexagon
a polygon with 6 sides and 6 angles.
Heptagon
a polygon with 7 sides and 7 angles.
Nonagon
a polygon with 9 sides and 9 angles.
Quadrilateral
a polygon with 4 sides and 4 angles.
Parallelogram
a quadrilateral whose opposite sides are parallel and have the same length, or are congruent.
Rhombus
a parallelogram with 4 congruent sides.
Trapezoid
a quadrilateral with exactly one pair of parallel sides.
Pyramid
a solid figure with triangular faces.
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