POLYGON

POLYGONis a closed figure formed by line segments intersecting at end

points. The line segment are called sides of polygons.

Polygons is classified according to the number of sides.

1.TRIANGLE•It is a three-sided polygons.

3a. Equilateral Triangle

•Has all three sides equal

2b. Isosceles Triangle

•Has two of the sides equal

c. Scalene Triangle

•Has three sides of unequal length

• Ex.

4d. Right Triangle

•Is where one of the angles is right

• Ex.

5-2. QUADRILATERAL•It is a four sided polygons.

•The different kinds of quadrilaterals are as follows.

6a. Parallelogram

• Is a quadrilateral with two pairs of opposite sides parallel and equal

• Ex.

b. Rectangle

• Is a parallelogram with a right angle

• Ex.

c. Square

•Is a rectangle with four equal sides

• Ex.

d. Rhombus

•Is a parallelogram with a right

7e. Trapezoid

•Is a quadrilateral with one pair of opposite sides parallel in which one of them is longer than the other.

f. Isosceles trapezoid

•Is a trapezoid with its non parallel sides equal.

g. Trapezium•Is a quadrilateral with no parallel sides and no equal angles.

• Ex.

8-3. Pentagon •It is a five sided polygon.

•If all the sides and angles of the pentagon are equal, it is a regular pentagon.

10-4. Hexagon

•It is a polygon with six sides.

•If all the sides and angles of the hexagon are equal, it is a regular pentagon.

5. Heptagon

•It is a polygon with seven sides.

• ex

9-6. Octagon

•It is a polygon with eight sides

• Ex.

7. Nonagon

•It is a polygon with nine sides

8. Decagon

•It is a polygon with ten sides

• Ex.