lesson
General Triangle Area Formula: Base × Height ÷ 2
Apply the formula A = ½ × base × height to find the area of any triangle, identifying the correct base and height pair.

Apply the formula A = ½ × base × height to find the area of any triangle, identifying the correct base and height pair.
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6 lessons
Find the area of right, acute, and obtuse triangles by composing and decomposing shapes, and apply the general triangle area formula to solve problems including missing dimensions.
Find the area of right triangles, other triangles, special quadrilaterals, and polygons by composing into rectangles or decomposing into triangles and other shapes; apply these techniques in the context of solving real-world and mathematical problems.