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roseemariehunter12
28.06.2021 •
Mathematics
Every Friday the boss buys pizza for his workers. Last week the workers finished 5 pizzas. This week
they finished 5 pizzas. Write the ratio of pizzas eaten last week to pizzas eaten this week.
Remember ratios must have two whole numbers.
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Ответ:
1:1 because they ate the same amount both weeks
Ответ:
AC bisects ∠BAD, => ∠BAC=∠CAD (1)
thus in ΔABC and ΔADC, ∠ABC=∠ADC (given),
∠BAC=∠CAD [from (1)],
AC (opposite side side of ∠ABC) = AC (opposite side side of ∠ADC), the common side between ΔABC and ΔADC
Hence, by AAS axiom, ΔABC ≅ ΔADC,
Therefore, BC (opposite side side of ∠BAC) = DC (opposite side side of ∠CAD), since (1)
Hence, BC=DC proved.