Ответ:
AD = 30:2=15
CBD = ABD = 31
ABC = 31+31=62
AD = 15 см
∠CBD = 31°
∠ABC = 62°
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Ответ:
AD = 30:2=15
CBD = ABD = 31
ABC = 31+31=62
AD = 15 см
∠CBD = 31°
∠ABC = 62°