Page 14 - Mathematics Teaching Material Two Dimensional Figure

Mathematics Teaching Material Two Dimensional Figure

2. Parallelogram

What is a Parallelogram?

Parallelogram is a quadrilateral whose sides are mutually opposite

and the same length

The parallelogram beside is called parallelogram
ABCD A, B, C and D. While the sides are AB, BC,

CD and DA. The length of AB=DC, while the

length of AB=BC. AB is parallel to DC, AD is
parallel with BC.

From the picture above we can conclude the properties of a parallelogram:

1. Has 4 sides

2. Opposite sides are equal and parallel

3. The diagonals bisect each other

4. Opposite angles are equal

5. Does not have folding symmetry

6. Has 2 rotational symmetries

Area of a parallelogram = ×

Around = 2 x (a + b)

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