# Basic Shapes in Geometry

In addition to color, artists employ **shapes** to craft an image. Shapes play a crucial role in conveying the appearance of objects. Observing your surroundings reveals a variety of shapes present in items such as toys, books, cookies, fruits, and even your home. This lesson will delve into the fundamental geometric shapes that are essential in mathematics.

## CIRCLE

- Think of a circle as a perfect round object. It has an infinite number of sides. The effect of having “too many” sides caused its surface to appear smooth around the corners.

## TRIANGLE

- A triangle is a shape with three (3) sides. There are many types of triangles. Some have equal sides while some do not.

## SQUARE

- A square has four (4) equal sides. It belongs to the quadrilateral family. Quadrilaterals are shapes with 4 sides.

## RECTANGLE

- A rectangle is a shape with two sets of opposite sides that are equal. Just like the square, the rectangle also has four (4) sides and is part of the quadrilateral family.

## PENTAGON

- A pentagon is a shape with five (5) sides.

## HEXAGON

- A hexagon is a shape with six (6) sides.

## HEPTAGON

- A heptagon is a shape with seven (7) sides.

## OCTAGON

- An octagon is a shape with eight (8) sides.

## NONAGON

- A nonagon is a shape with nine (9) sides.

## DECAGON

- A decagon is a shape with ten (10) sides.

## OVAL

- Oval has the shape of an egg. Just like the circle, it also has “smooth edges”.

## KITE

- Have you flown a kite? A kite shaped object must have two sets of equal sides. The sides that are equal must be adjacent to each other.

## HEART

- A heart shape is usually rounded on top and pointed at the bottom. The heart is the symbol of love which is why you often see a lot of heart shapes on Valentine’s Day. This shape is part of the cardioids family.

## CRESCENT

- A crescent shape is formed when you remove a smaller circle from the edge of a bigger circle. You can also think of it is a circle where only a part of it is shown. We usually see a crescent moon between new moon and half moon.