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# grid & polygons

### 5.G.3&4

TermDefinition
rectangle A parallelogram with four right angles
rhombus A parallelogram with all sides the same length
square A rectangle with all sides the same length
generalization A general statement Example: A generalization about rectangles applies to all rectangles.
trapezoid A quadrilateral that has exactly one pair of parallel sides
obtuse triangle A triangle in which one angle is an obtuse angle
acute triangle A triangle whose angles are all acute angles
right triangle A triangle in which one angle is a right angle
scalene triangle A triangle in which no sides have the same length
isosceles triangle A triangle with two sides of the same length
equilateral triangle A triangle whose sides all have the same length
octagon A polygon with 8 sides
hexagon A polygon with 6 sides
pentagon A polygon with 5 sides
quadrilateral A polygon with 4 sides
triangle A polygon with 3 sides
regular polygon A polygon that has sides of equal length and angles of equal measure
polygon A closed plane gure made up of line segments
coordinate grid A grid that makes it easy to locate points on a plane by using an ordered pair of numbers.
x-axis The horizontal axis in a graph or coordinate grid.
y-axis The vertical axis in a graph or coordinate grid.
origin The point at which the x-axis and the y-axis of a coordinate plane intersect. The origin is represented by the ordered pair (0, 0).
ordered pair A pair of numbers used to locate a point on a coordinate grid.
x-coordinate The first number in an ordered pair which names the distance from the origin along the x-axis.
y-coordinate The second number in an ordered pair which names the distance from the origin along the y-axis.
heptagon A polygon with 7 sides
Created by: buchananwle