Calculating Areas of Triangles and Polygons

This video tutorial explains how to find the area of an irregular polygon using a coordinate plane. The process involves surrounding the polygon with a box, calculating the area of the box, and then subtracting the areas of the triangles formed around the polygon. The tutorial provides step-by-step instructions, including the use of the base and height formula for triangles. The final area of the polygon is determined by subtracting the total area of the triangles from the area of the box. The video concludes with encouragement to continue learning.

What is the main focus of the video tutorial?

• Finding the area of a regular polygon

• Finding the area of an irregular polygon

• Calculating the perimeter of a polygon

• Understanding the properties of triangles

What is the first step in finding the area of an irregular polygon?

• Calculating the perimeter

• Enclosing it in a box

• Drawing a circle around it

• Finding the midpoint

How many triangles are formed around the irregular polygon?

• Five

• Two

• Three

• Four

What is the formula used to calculate the area of a triangle?

• Base times height

• Base times height divided by two

• Base plus height

• Base minus height

What is the area of the first triangle calculated in the video?

• 6

• 8

• 2

• 4

What is the area of the second triangle calculated in the video?

• 3

• 4

• 5

• 6

What is the area of the third triangle calculated in the video?

• 5

• 6

• 7

• 8

What is the area of the fourth triangle calculated in the video?

• 4

• 7

• 6

• 5

What is the total area of all four triangles?

• 21

• 19

• 17

• 15

What is the area of the box enclosing the polygon?

• 36

• 40

• 42

• 44