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Geometry
- 2. ©A. Weinberg
Let’s learn a bit about Geometry!
Geometry is a part of Math that focuses on
shapes and lines.
Shapes
Lines
- 4. ©A. Weinberg
Solid Figures are 3-dimensional figures. That
means that they look like they can stand up on
their own.
Rectangular
Solid
cylinder
Cube
- 5. ©A. Weinberg
Let’s take a look at some plane figures (2-
dimensional).
A square has 4 sides of
equal length.
1
4 3
2
- 7. ©A. Weinberg
A circle is a shape where all points are the
same distance from the center. It does not
have any sides or any corners.
- 10. ©A. Weinberg
A cube is a 3-dimensional solid with 6
congruent square faces.
Every face in a cube is a square and every
edge is the same length. A cube has 8 corners
and 12 edges.
a square
edge
- 11. ©A. Weinberg
A cylinder is a 3-dimensional object formed by
2
Congruent,
Parallel
Circles.
The circles are joined by a curved surface.
a curved surface
- 13. ©A. Weinberg
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. Weinberg
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. ©A. Weinberg
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 space figures. They
look like they could stand up and you could
touch them!