2 Dimension Shapes
Definition:
- 2-dimensional (2D) shapes have only two dimensions, length and width .
- A polygon is a 2-D shape with straight sides that meet up with no gaps.
- They can be drawn on a piece of paper.
Examples of dimensions include length, width or breadth, depth and height.
In primary school, children will learn about the following 2d shapes: polygons, regular and irregular shapes.
- A polygon is a 2D shape with straight sides.
- A regular shape has all sides the same length and all interior angles the same size.
- An irregular shape has different length sides and/or interior angles.
- Example 1:
A rhombusa is a parallelogram with four equal sides
and sometimes one with no right angles. Example 2:
A triangle- is a three-sided polygon that closes in a space.
- It uses lines, line segments or rays (in any combination) to form the three sides.
- When three sides form and meet, they create three vertices, or corners.
- The corners inside the triangle are interior angles.
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