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## Geometry: Polygons & Shapes - CCSS 3.G.A.1, 3.MD.C.7.C, 3.MD.C.7.D, 3.MD.D.8

## Links verified on 2/21/2013

- Anglemania - Describe triangles using appropriate geometric vocabulary.
- Area Explorer - Find the perimeter of shapes on a grid.
- Ask Hannah - Describe symmetry in two-dimensional shapes.
- Congruent Concentration - Use a matching board to demonstrate knowledge of congruent figures.
- Congruent or Not - Explore the concept on congruency of polygons.
- Fence Me In - Find the perimeter of a rectangle.
- Geoboard - Interactive on-line geoboard.
- Geometry: Parallel, Perpendicular or Intersecting Lines - Multiple choice and T/F questions.
- How Many Sides or Angles are in the Polygon? - Interactive practice, after practicing scroll down to the game.
- Name that Polygon - Identify name of given polygon components.
- Triangle Identification - What type of triangle is it given its angles.
- Triangle Identification - What type of triangle is it given its number of sides.
- Perimeter Explorer - Students are shown shapes on a grid after setting the area and asked to calculate perimeters of the shapes.
- Perimeter Practice - Adam Ant walks the perimeters and teaches how to find the perimeter of an object.
- Perimeter of a Square - Calculate the perimeter of a square with given dimensions.
- Perimeter of a Rectangle - Calculate the perimeter of a square with given dimensions.
- Polygon Playground - Arrange designs with online movable polygons - hundreds of polygons to drag anywhere you want.
- What Type of Polygon is It? - Interactive practice, after practicing scroll down to the game.
- What Type of Triangle is It? - Interactive practice, after practicing scroll down to the game.

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