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Mathematics 7 Online
OpenStudy (anonymous):

HELP?! If m CD = 118°, and AB = 66°, what is m∠CED? http://tinypic.com/r/eirpn9/5

OpenStudy (raden):

use the formula : m∠CED = 1/2 * (m CD + m AB) so, m∠CED = 1/2 * (118° + 66°) = 1/2 * 184° = 92°

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