Page 13 - Mathematics Teaching Material Two Dimensional Figure

Mathematics Teaching Material Two Dimensional Figure

C. Kinds of Flat Build

1. Rhombus

What is a Rhombus?

Rhombus is parallelogram with the same sides long

AC is called diagonal 1 (d1) and
BD is called diagonal 2 (d2)

Look at the picture above.

Let's learn the properties of a rhombus !

1. Has 4 sides, namely sides AB, BC, CD, DA

2. All four sides are the same length, AB = BC = CD = DA

3. Opposite angles are equal, A = C, B = D

4. The diagonals are perpendicular to each other bisecting the same length

5. Has 2 fold symmetry

6. Has 2 rotational symmetries

Area of a rhombus = × ×

Around = 4 s
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