Understanding the Area of a Triangle

What is the area of a triangle derived from?

• Area of a circle

• Area of a square, rectangle, or parallelogram

• Area of a trapezoid

• Area of a pentagon

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

• 2 square inches

• 4 square inches

• 16 square inches

• 8 square inches

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

• Base divided by height

• Half of base times height

• Base plus height

• Base times height

What is the area of a triangle with a base of 12 cm and a height of 5 cm?

• 30 square centimeters

• 15 square centimeters

• 60 square centimeters

• 25 square centimeters

What formula is used to calculate the area of a triangle when all sides are known?

• Quadratic formula

• Sine rule

• Heron's formula

• Pythagorean theorem

What is the semi-perimeter of a triangle with sides of 6 cm each?

• 12 cm

• 6 cm

• 9 cm

• 18 cm

In Heron's formula, what does 's' represent?

• The base of the triangle

• The semi-perimeter

• The height of the triangle

• The sum of the sides

What is the area of a triangle with sides of 6 cm each using Heron's formula?

• 15.59 square centimeters

• 18 square centimeters

• 12 square centimeters

• 9 square centimeters

What is the square root of 243 approximately?

• 15.59

• 14.59

• 16.59

• 13.59

Which of the following is NOT a step in using Heron's formula?

• Subtract each side from the semi-perimeter

• Calculate the semi-perimeter

• Multiply the semi-perimeter by the differences

• Add the base and height