Exploring Area and Perimeter of Trapezoids, Parallelograms, and Triangles

The video tutorial covers the calculation of area and perimeter for three geometric shapes: triangles, parallelograms, and trapezoids. It emphasizes the importance of identifying the right angle to determine the base and height for area calculations. The tutorial provides step-by-step instructions for using formulas to find the area and perimeter of each shape, with examples and practice problems to reinforce learning.

What is the key to identifying the base and height in the shapes discussed?

• Counting the number of sides

• Identifying the right angle

• Measuring the diagonals

• Finding the longest side

How do you calculate the area of a triangle?

• Base times height

• Base divided by height

• One-half base times height

• Base plus height

What is the perimeter of a triangle with sides 10, 8, and 6 units?

• 24 units

• 28 units

• 30 units

• 26 units

What is the formula for the area of a parallelogram?

• Base plus height

• Base times height

• Base divided by height

• One-half base times height

If a parallelogram has a base of 9 units and a height of 4 units, what is its area?

• 36 square units

• 45 square units

• 28 square units

• 32 square units

How do you find the perimeter of a parallelogram?

• Add all the sides

• Subtract the height from the base

• Multiply the base and height

• Add the base and height

What is the formula for the area of a trapezoid?

• One-half base times height

• Base times height

• One-half height times (base1 + base2)

• Base plus height

If a trapezoid has bases of 15 and 10 units and a height of 6 units, what is its area?

• 90 square units

• 45 square units

• 75 square units

• 60 square units

How many sides does a trapezoid have?

• 6

• 5

• 4

• 3

What is the perimeter of a trapezoid with sides 7, 10, 7, and 15 units?

• 35 units

• 40 units

• 39 units

• 30 units