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Geometric terms

5/6 geometry vocabulary

QuestionAnswer
a closed plane figure made up of line segments polygon
a 3 sided polygon triangle
a 5 sided polygon pentagon
a 6 sided polygon hexagon
a 4 sided polygon quadrilateral
a a polygon that has equal sides and angles a regular polygon
an angle that measures between 0* and 90* acute angle
an angle that measures exactly 90* right angle
an angle that measures between 90* and 180* obtuse angle
an angle that measures exactly 180* a straight angle
the central point on a circle which is the same distance from the center circle name or center
a line from the center point of a circle to any point on the circle. It is 1/2 of the diameter. radius
a line that has end points on a circle chord
a line segment that passes through the center of a circle cutting the circle in 1/2. diameter
an angle whose vertex is the center of a circle central angle
a quadrilateral with both pairs of opposite sides parallel and equal in length parallelogram
a parallelogram with 4 right angles rectangle
a parallelogram with all sides the same length rhombus
a rectangle with all sides the same length square
a quadrilateral with only one pair of parallel sides trapezoid
a triangle with all angles less than 90* acute triangle
a triangle with one right angle right triangle
a triangle with one obtuse angle obtuse triangle
a triangle with all side of equal length equilateral triangle
a triangle with 2 sides the same length isosceles triangle
a triangle with no sides the same length scalene triangle
The sum of the measures of the angles of a quadrilateral is... 360*
the sum of the measures of the angles of a triangle is .... 180*
an exact location in space point
a straight path of points that goes on forever in 2 directions line
part of a line. It has 2 endpoints line segment
a part of a line. It has one endpoint and extxnds forever in only one direction. ray
an endless flat surface. plane
2 lines that never cross and stay the same distance apart parallel lines
2 lines that pass through the same point intersecting lines
2 rays with the same endpoint angle
the common endpoint of an angle vertex
A tool used to measure angles protractor
an angle that measures between 0* and 90* acute angle
an angle that measures exactly 90* right angle
an angle that measures between 90* and 180* obtuse
the point where 2 rays meet vertex
Created by: lleahy