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Common Core Math Geometry: G-SRT.D.9

CodeHS Lessons

(+) Derive the formula A = 1/2 ab sin(C) for the area of a triangle by drawing an auxiliary line from a vertex perpendicular to the opposite side.

Standard
11.1 Calculating Area
11.2 Categorizing Triangles with a Static Base Value
11.3 Categorizing Triangles with a Varied Base Value
Standard
8.1 Calculating Area
8.2 Categorizing Triangles with a Static Base Value
8.3 Categorizing Triangles with a Varied Base Value
Standard
19.1 Calculating Area
19.2 Categorizing Triangles with a Static Base Value
19.3 Categorizing Triangles with a Varied Base Value
Standard
8.1 Calculating Area
8.2 Categorizing Triangles with a Static Base Value
8.3 Categorizing Triangles with a Varied Base Value