Geom10.3and10.5.notebook
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Geometry
Ch.10 Notes Page 52
P52 10­3 Areas of Regular Polygons
10­5 Trigonometry and Area
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Central Angles
To find the measure of a central angle: ___________ ÷ ___________________________________
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Each regular polygon has radii and an apothem as shown.
Find the measure of each numbered angle.
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Find the Areas of each Polygon.
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Review
Special Right Triangles Rules...
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Find the Areas Using special right triangle rules.
Round answers to the nearest tenth.
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Find the Areas Using special right triangle rules.
Round answers to the nearest tenth.
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Trigonometry Option: Find the Areas using SOHCAHTOA.
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Trigonometry Option: Find the Areas using SOHCAHTOA.
A regular octagon with a side of 8 cm
A regular dodecagon with a apothem of 20
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Solve either using Special right triangles or Trig.
A regular hexagon with a side of 22 in Apr 20­8:17 AM
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22.5
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HW61
10­3 and 10­5 WS (Odds)
Please put your name and class period at the top of
the homework. Also include the homework number.
Terms:
Radius of a Regular Polygon
Apothem
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