By: Matti, Jadiss, Justin, and Ty M. Geometric Shapes By: Matti, Jadiss, Justin, and Ty M.

2D shapes 2D shapes are flat. 2D shapes are shapes that only have 1 face. 2D shapes can only be a drawing or picture. On paper a 3D shape is still 2D. 2D means 2 dimensional those 2 dimensions are height and width.

3D shapes A cube is 3D. A cone is 3D. A rectangular prism is 3D. Pyramids are 3D shapes. 3D means 3 dimensional. Those 3 dimensions are height, width, and depth.

Example Questions 1. Is the moon 3D or 2D? Do you have proof? 2. Draw a square and a rectangle.  Then analyze each.  Is a square a rectangle?  Use your analysis to justify your answer. 3. Match and analyze the quadrilaterals below. What makes a trapezoid different from many of the other types of quadrilaterals?  4. Explain what a quadrilateral is.  5. A teacher said that 2D shapes are made of lines. Criticize this teachers statement.

Example Answers 1.The moon is 3D because Neil Armstrong stood on it. 2. Yes, a square is a rectangle, because a rectangle has four sides, 2 sets of parallel sides, and 4 right angles, so does a square.  The only difference is that a square is a special kind of rectangle, because all four sides are equal.
 3. A trapezoid is different because it doesn't have any right angles.
 4.A quadrilateral is any shape that has 4 sides. 5. This teacher is wrong because lines go on forever and shapes are made of points.

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