Geometry Vocabulay

There is a great deal of vocabulary that students need to understand in order to effectively converse about 2-D geometry. Here are the terms we have discussed so far:

• Polygon
• Point
• Line
• Line Segment
• Perpendicular Lines
• Parallel Lines
• Right Angle
• Acute Angelo
• Obtuse Angle
• Triangle
• Quadrilateral
• Pentagon
• Hexagon
• Heptagon / Septagon
• Octagon
• Decagon

We'll be adding to this list often as we explore further geometric ideas. Ask your 4th grader to explain these terms to you!