Basic polygons

What is the formula of finding the number of diagonals in a polygon?

Apakah rumus untuk mencari bilangan pepenjuru bagi sebuah poligon?

• $\frac{n\left(n-1\right)}{2}$

• $\frac{n\left(n-2\right)}{2}$

• $\frac{n\left(n-3\right)}{2}$

• $\frac{n\left(n-4\right)}{2}$

How many sides does a Pentagon have?

Berapakah sisi Pentagon?

• 4

• 3

• 5

• 9

What is the name of this polygon?

Apakah nama poligon ini?

• Pentagon

  Pentagon

• Nonagon

  Nonagon

• Octagon

  Oktagon

• Hexagon

  Heksagon

Hexagon has ______sides.

Heksagon mempunyai ______ sisi.

• 6

• 8

• 4

• 10

Why is a Triangle called Equilateral?

Mengapakah segi tiga ini dipanggil Segi tiga sama sisi?

• 2 of the sides have the same length.

  2 daripada sisinya sama panjang.

• 3 of the sides have the same length.

  3 daripada sisinya sama panjang.

• No sides have the same length.

  Tiada sisinya sama panjang.

• 4 of the sides have the same length.

  4 daripada sisinya sama panjang.

Why is a Triangle called a Right Triangle?

Mengapakah segi tiga ini dipanggil Segi tiga bersudut tegak?

• It has 3 right angles

  Ia mempunyai 3 sudut tegak

• It has 2 right angles

  Ia mempunyai 2 sudut tegak

• It has 1 right angle

  Ia mempunyai 1 sudut tegak

• It has 0 right angles

  Ia mempunyai 0 sudut tegak