REGULAR POLYGONS (PERIMETER AND AREAS))

What is the name given to this type of shapes?

• Irregular Polygons

• Quadrilaterals

• Regular Polygons

• Compound Shapes

Answer explanation

Irregular Polygons have sides that are not equal to each others and have angles not equal to each others.

If all the sides and interior angles of the polygons are equal is called?

• Irregular Polygons

• Quadrilaterals

• Regular Polygons

• Compound Shapes

Answer explanation

Regular Polygons have all the sides and interior angles equal to each others.

In the figure, what will be the perimeter of the shape if "a" = 5cm?

• 5cm

• 5cm²

• 40cm

• 40cm²

Answer explanation

Since is a regular polygon and one side = 5cm,

Multiply 5cm by the numbers of sides which is = 8 sides.

:. 5cm x 8 = 40cm.

Option C IS WRONG BECAUSE THE UNIT HAS CM²

Any shape that is made up of two or more geometric shapes is called ….

• Compound Shapes

• Quadrant Shapes

• Quadrilateral Shapes

• Equilateral Shapes

Answer explanation

Any shape that is made up of two or more geometric shapes is called compound or composite shapes.

Calculate the perimeter of this shape.

• 19cm

• 15cm

• 19cm²

• 38cm

The area of this compound or composite shape can be calculated as:

Hint: Split shapes into A and B, find the areas each and ADD the two areas, A&B

• 5cm x 10cm

• 4cm x 9 cm

• (5cmx6cm) + (9cmx4cm)

• (5cm x 10cm) +(9cm + 4cm)

Answer explanation

Irregular Polygons have sides that are not equal to each others and have angles not equal to each others.