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Polygon vocab 5

attribute properties of a shape; definition of a shape
polygon closed plane figure with straight edges that are line segments
regular polygon polygon where all the sides are the same length
2-Dimensional plane figure that lies on a flat surface
open figure vs. closed figure figure in which 2 rays or line segments are not connected with a point vs. figure in which all rays and segments are connected with a point
triangle 3 sides; 3 angles (sum 180)
quadrilateral 4 sides; 4 angles (sum 360)
pentagon 5 sides; 5 angles (sum 540)
hexagon 6 sides; 6 angles (sum 720)
octagon 8 sides; 8 angles (sum 1,080)
circle not a polygon, round edges
half circle part of a circle with a straight edge
right triangle 3 sides with 1 right angle, 2 acute angles
acute triangle 3 sides with 3 acute angles
obtuse triangle 3 sides with 1 obtuse angle, 2 acute angles
scalene triangle 3 sides with none equal
isosceles triangle 3 sides with only 2 equal
equilateral triangle 3 equal sides
square 4 equal sides, 4 right angles, 2 pairs parallel sides
rectangle 2 pairs equal sides, 2 pairs parallel sides, 4 right angles
rhombus/rhombi 4 equal sides, 2 pairs parallel sides
parallelogram 2 pairs equal sides, 2 pairs parallel sides
trapezoid 2 right, 1 acute, and 1 obtuse angle, 1 pair parallel sides…OR… 2 acute and 2 obtuse angles, 1 pair parallel sides
congruent plane figures with the same shape and same size
category a group of objects that are the same type
subcategory a more specific group of objects that are the same type within a category
classify to arrange, organize, or order objects that have similar attributes or characteristics (similar to category)
partition to divide or separate into parts or sections
hierarchy series of ordered groupings within a system
Created by: crstone