GEOMETRY: LINES, DIAGONALS AND PLANES
POLYGONS AND QUADRILATERALS
Look around the room. There are many objects of various shapes and sizes. We will discuss some basic vocabulary to build our knowledge of the geometry in our world.
There are many geometric shapes that are the building blocks for more complex shapes and objects all around us. Polygons are shapes made up of line segments that form a closed path. Polygons are given names like octagon, decagon, and hexagon which are based on the number of line segments that make the shape. Diagonals are lines that connect corner points of polygons.
Four-side polygons are called quadrilaterals. Some common quadrilaterals are the rectangle, square, and parallelogram.
Planes are flat surfaces. Perpendicular planes are planes that intersect at right angles. Planes that are equidistant apart are call parallel surfaces.
Geometry Vocabulary
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Polygons
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To review the coordinate plane, ordered pairs, or graphing click the video below. |
 The Coordinate Plane and Ordered Pairs (5:28) |
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 Click on the icon to find and practice topics for this unit. |
| Unit 17 Identify the Type for each Regular Polygon Worksheet |
| Unit 17 Identify the Type for each Quadrilateral Worksheet |
| Unit 17 Parallel Lines Worksheet |
| Unit 17 Perpendicular Lines Worksheet |
