Theorem The area A of a triangle is

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Presentation transcript:

Theorem The area A of a triangle is where b is the base and h is the altitude drawn to that base.

Right triangle: sides a, b hypotenuse c Area is (1) ½ ab (2) ½ bc (3) ½ ac

a h b

Theorem The area A of a triangle equals one-half the product of two of its sides times the sine of its included angle.

Theorem Heron’s Formula The area A of a triangle with sides a, b, and c is

a, b, c in inches. What are the units for triangle area a, b, c in inches. What are the units for triangle area? (1) inches (2) square inches (3) cubic inches