Calculating Triangle Area on a Grid

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

• Base divided by height

• One half times base times height

• Base times height

• Base plus height

How do you calculate the area of a triangle using its base and height?

• Multiply base with height and then add two

• Add base and height and then divide by two

• Divide base by height and then multiply by two

• Multiply base with height and divide by two

If a triangle has a base of 3 units and a height of 4 units, what is its area?

• 12 square units

• 7 square units

• 3.5 square units

• 6 square units

What is the area of a triangle with a base of 3 units and height of 2 units?

• 2 square units

• 3 square units

• 1.5 square units

• 6 square units

What method involves subtracting areas of smaller triangles from a rectangle to find the area of the original triangle?

• Multiplication method

• Subtraction method

• Direct comparison method

• Rectangle subtraction method

What is the area of the rectangle if its dimensions are 4 units by 6 units?

• 20 square units

• 10 square units

• 12 square units

• 24 square units

What is the area of the purple triangle subtracted in the rectangle method if its base is 3 units and height is 6 units?

• 6 square units

• 12 square units

• 18 square units

• 9 square units

What is the final area of the green triangle using the rectangle subtraction method?

• 24 square units

• 13 square units

• 15 square units

• 9 square units

If the total area of the rectangle is 24 square units and the areas of the subtracted triangles are 9, 2, and 4 square units, what is the area of the green triangle?

• 9 square units

• 11 square units

• 13 square units

• 8 square units

Which of the following is a correct step in the rectangle subtraction method to find the area of a triangle?

• Divide the rectangle's area by the areas of the subtracted triangles

• Multiply the areas of the subtracted triangles

• Subtract the areas of the subtracted triangles from the rectangle's area

• Add the areas of the subtracted triangles