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Mathematics, 04.08.2021 14:00 cesarcastellan9

The given triangle ABCD, prove that angle BCD = angle BAD + angle ABC + angle ADC.​


The given triangle ABCD, prove that angle BCD = angle BAD + angle ABC + angle ADC.​

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The given triangle ABCD, prove that angle BCD = angle BAD + angle ABC + angle ADC.​
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