lesson
Finding Apothem and Side Length in Regular Polygons
Use trigonometric ratios and special right triangle relationships to find the apothem or side length of a regular polygon.
Updated 1 month ago · 3 views
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This lesson is part of a track
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Area of Polygons and Composite Figures
8 lessons
Goal
Apply formulas for the area of regular polygons and decompose composite figures to calculate total area.
8 lessons
0 of 8 done
- Area of Regular Polygons Using the ApothemUp next
- Finding Apothem and Side Length in Regular PolygonsYou are here
- Solving Problems with Regular Polygon AreaNot started yet
- Area of Composite Figures: Triangles and ParallelogramsNot started yet
- Area of Composite Figures: Trapezoids and KitesNot started yet
- Area of Composite Figures: Sectors of CirclesNot started yet
- Area of Composite Figures: Mixed ShapesNot started yet
- Real-World Problems with Composite AreaNot started yet
Learning standards covered
111.41(b)(11)(A)Texas Essential Knowledge and Skills (TEKS) · Math · 10th Gradeapply the formula for the area of regular polygons to solve problems using appropriate units of measure;
Open Global Standard:OGM.11.MEA.1
111.41(b)(9)(A)Texas Essential Knowledge and Skills (TEKS) · Math · 10th Gradedetermine the lengths of sides and measures of angles in a right triangle by applying the trigonometric ratios sine, cosine, and tangent to solve problems; and
Open Global Standard:OGM.11.TRG.1
111.41(b)(1)(B)Texas Essential Knowledge and Skills (TEKS) · Math · 10th Gradeuse a problem-solving model that incorporates analyzing given information, formulating a plan or strategy, determining a solution, justifying the solution, and evaluating the problem-solving process and the reasonableness of the solution;
Open Global Standard:OGM.11.GEO.1
OGM.11.MEA.1OGM.11.TRG.1OGM.11.GEO.1