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3 cards from this section. Quick, good the night before a test.
What is the area of a triangle with a base of 6 units and a height of 4 units?
Remember the basic area formula: (1/2) × base × height.
Calculate the area of a triangle with base = 8 units and height = 3 units.
Plug the values into the area formula.
What is the formula for the area of a triangle when the base and height are known?
Think about how the area of a rectangle is calculated.
True or False: Heron's formula can be used when we only know the lengths of the sides of the triangle.
Recall the conditions for using Heron's formula.
A scalene triangle has sides of lengths 9, 12, and 17. Calculate its area using Heron's formula.
Make sure to calculate s precisely before plugging into Heron’s formula.
Find the area of a triangle with sides of lengths 6, 10, and 12, using the Law of Cosines to find one angle first and then using the trigonometric formula.
First calculate the angle before you apply the area formula.
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