Geometry -2D

ray

• a set of connected points that continues in one direction without end

• a straight line that has a definite starting point and extends infinitely in both directions

• a collection of points that forms a closed figure

• a line segment that has a fixed length

parallel

• lines that extend in the same direction that stay the same distance apart that will never touch

• lines that intersect at a right angle

• lines that curve away from each other

• lines that meet at a single point

dimension

• a linear measure of a shape or an object in one direction

• a measure of the area of a shape

• the total volume of an object

• the color of an object

rectangle

• a quadrilateral with 2 pairs of parallel sides and 4 right angles

• a polygon with all sides equal

• a shape with no parallel sides

• a three-dimensional shape with six faces

angle

• a figure formed by two rays or line segments that share an endpoint

• a straight line that extends infinitely in both directions

• a closed figure with three or more sides

• the distance between two points in a plane

exterior angle

• an angle outside a polygon

• an angle inside a polygon

• an angle formed by two intersecting lines

• an angle that measures more than 180 degrees

congruent

• the exact same shape or size; equal

• similar in shape but not size

• different shapes but equal area

• having no relation to size or shape

rhombus

• a quadrilateral with 4 congruent sides

• a polygon with 5 sides

• a quadrilateral with 4 right angles

• a triangle with equal sides

scalene triangle

• a triangle with all sides equal

• a triangle with two sides equal

• a triangle whose sides are all of different lengths

• a triangle with one right angle

equilateral

• all sides and angles are congruent

• only two sides are equal

• no sides are equal

• only one angle is 90 degrees