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Back to Find the area of right triangles, other triangles, special quadrilaterals, and polygons — Problem 2 · Task Set 21

Find the Area of Right Triangles, Other Triangles, Special Quadrilaterals, and Polygons

Show all work. For each shape, identify the base and height before applying the formula. Include square units in all answers.

Grade 6·22 problems·~40 min·Common Core Math - Grade 6·standard·6-g-a-1
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Fluency Practice

Obtuse triangle with base 12 ft, perpendicular height 5 ft shown as a dashed line outside the triangle, and slant side 8 ft labeled.
1.

An obtuse triangle has a base of 12 ft, a perpendicular height of 5 ft (drawn outside the triangle), and a slant side of 8 ft. What is the area of the triangle?