Geometry Module 2, Topic E, Lesson 31

Student Taking Notes

Student Outcomes

  • Students prove that the area of a triangle is one-half times the product of two side lengths times the sine of the included angle and solve problems using this formula.
  • Students find the area of an isosceles triangle given the base length and the measure of one angle.

Downloadable Resources

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Common Core Learning Standards

CCLS State Standard
G.SRT.8 Use trigonometric ratios and the Pythagorean Theorem to solve right triangles in applied problems.★
G.SRT.9 (+) Derive the formula A = 1/2 ab sin(C) for the area of a triangle by drawing an auxiliary line...

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