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MyMthCh14

Geometry

TermDefinition
acute angle an angle with a measure that is greater than 0 degrees and less than 90 degrees
acute triangle a triangle that has three acute angles
angle a geometric shape formed when two rays share the same endpoint
degree the unit used to measure an angle
endpoint the point at the beginning of a ray or line segment
intersecting lines that meet or cross each other
line a straight set of points that extend forever in opposite directions
line of symmetry the fold line indicating that a figure's two halves match exactly
line segment a part of a line between two endpoints
line symmetry If a figure can be folded over a line so that one half of the figure matches the other half, it has line symmetry.
obtuse angle an angle that measures greater than 90 degrees but less than 180 degrees
obtuse triangle a triangle with one obtuse angle
one-degree angle an angle that turns through 1/360 of a circle
parallel lines that are always the same distance apart; lines that do not meet
parallelogram a quadrilateral with opposite sides equal in length and parallel; opposite angles have the same size
perpendicular lines that meet or cross each other to form right angles
point an exact location represented by a dot
ray a part of a line that has one endpoint and goes on forever in one direction without ending
rectangle a quadrilateral with 4 right angles; both sets of opposite sides are equal in length and parallel
rhombus a quadrilateral with 4 equal sides; opposite sides are equal in length and parallel.
right angle an angle with a measure of 90 degrees
right triangle a triangle with one right angle
square a quadrilateral with 4 right angles and 4 equal sides; opposite sides are equal in length and parallel
trapezoid a quadrilateral with exactly one pair of parallel sides
Created by: mbberner
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