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Geometry

Geometry. SOL 3.18. By Ms. Weinberg. Let’s learn a bit about Geometry! Geometry is a part of Math that focuses on shapes and lines. Shapes. Lines. Plane Figures are 2-dimensional figures. That means that they look flat. Circle. Triangle. Square. Rectangle.

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Geometry

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  1. Geometry SOL 3.18 By Ms. Weinberg

  2. Let’s learn a bit about Geometry! Geometry is a part of Math that focuses on shapes and lines. Shapes Lines

  3. Plane Figures are 2-dimensional figures. That means that they look flat. Circle Triangle Square Rectangle

  4. Solid Figures are 3-dimensional figures. That means that they look like they can stand up on their own. cylinder Rectangular Solid Cube

  5. Let’s take a look at some plane figures (2-dimensional). 1 3 4 A square has 4 sides of equal length. 2

  6. A rectangle has 4 sides and 4 corners. The 4 corners always make right angles. A right angle

  7. A circle is a shape where all points are the same distance from the center. It does not have any sides or any corners.

  8. A triangle is a shape with 3 sides and 3 vertices (points).

  9. Now let’s learn about 3-dimensional shapes.

  10. A cube is a 3-dimensional solid with 6 congruent square faces. edge a square Every face in a cube is a square and every edge is the same length. A cube has 8 corners and 12 edges.

  11. A cylinder is a 3-dimensional object formed by 2 Congruent, Parallel Circles. a curved surface The circles are joined by a curved surface.

  12. A rectangular solid is a 3-dimensional figure in which all 6 faces are rectangles. rectangle

  13. A sphere is a 3-dimensional object with all of its points the same distance from the center. a ball is a sphere

  14. A cone is a solid, pointed figure that has flat, round base. The base is usually a circle that is joined to the point (vertex) by a curved surface.

  15. Now you know about 2-dimensional and 3-dimensional shapes. 2-dimensional figures are plane figures. They are flat and “on” the paper. 3-dimensional figures are solid figures. They look like they could stand up and you could touch them!

  16. The End!

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