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Practice 10-5: Trigonometry and Area
In this trigonometry and area activity, students, given the apothem, find the area of regular polygons. Afterward, they determine the area of rectangles. This one-page activity contains 22 problems.
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Investigating Area Under a Curve
Taking a lesson straight from the calculus classroom and making it algebra appropriate is the task of the day. Learners go step by step through calculating different area approximations underlines and curves, reviewing many key geometry...
9th - 11th Math CCSS: Designed
New Review An Area Formula for Triangles
Use a triangle area formula that works when the height is unknown. The eighth installment in a 16-part series on trigonometry revisits the trigonometric triangle area formula that previously was shown to work with the acute triangles....
11th - 12th Math CCSS: Designed
Using Trigonometry to Determine Area
What do you do when you don't think you have enough information? You look for another way to do the problem! Pupils combine what they know about finding the area of a triangle and trigonometry to determine triangle area when they don't...
9th - 10th Math CCSS: Designed