Page 268 - NUMINO_WB_6B
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125_G6U27_WB˜ ˙—» ¿º 2011.6.23 3:44 PM ˘ ` 22

125-P4-2

3. Find the unknown angle.

a 28
71 98

124

4. Find one of the interior angles of an equilateral decagon.
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