Apothem is the height of isosceles triangle AOB, so it bisects ∠AOB and Thus, and AT = BT Use trigonometric ratios to find the side length and apothem
PDFMay 4, 2011 · Apothem - a segment from the center of the polygon to the midpoint of a side To find the area of a regular polygon - A = 1/2ap
PDFDetermine the apothem The apothem of a regular polygon is the shortest distance from the center point to one of the sides, creating a right angle This is a
PDFFind the perimeter and apothem of each polygon Sheet 1 Polygon - Apothem Answer key 1) 2)
PDFFinding Angle Measures The figure at the right is a regular pentagon with radii and an apothem drawn Find the measure of each numbered angle
PDFIn Lesson 10-3, you learned to find the area of a regular polygon by using the formula A = ap, where a is the apothem and p is the perimeter By using this
PDFFinding the area of an equilateral triangle the product of the apothem (a) and the perimeter (P), 360° by the number of sides to find the measure of
PDFAt the right, a portion of a regular octagon has radii and an apothem drawn What is the measure of each numbered angle? 6 A regular octagon has sides 7
PDFRegular Octagon “a” is the length of the apothem In order to calculate the area of any of the above regular polygons, we will use the formula:
PDFUse apothem and radius to draw in a right triangle — 2 Divide 360 by 2x(number of sides) to get top angle — 3 Use right triangles to find needed
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