SIS Geometry Vocab

a two dimensional closed shape made with three or more line segments. 

• Triangle
• Square
• Circle
• Polygon

a FOUR sided polygon

• Triangle
• Quadrilateral 
• Circle 
• Line

a THREE sided polygon 

• Circle 
• Line 
• Square
• Triangle

a FIVE sided polygon

• pentagon
• hexagon
• octagon
• cirlce

a SIX sided polygon

• hexagon
• pentagon
• octagon
• triangle 

an EIGHT sided polygon

• octagon
• pentagon
• triangle 
• rhombus

a triangle with no sides the same length

• Scalene
• Isosceles 
• Equilateral 
• Rhombus

a triangle with three acute angles

• Acute Triangle 
• Obtuse Triangle 
• Right Triangle 
• Left Triangle 

a parallelogram with four sides equal in length 

• Rhombus 
• Triangle 
• Circle 
• Line

a quadrilateral with opposite sides parallel and equal in length

• Circle 
• Parallelogram 
• Triangle 
• Octagon