Boone Reyes
11/06/2023 · Elementary School
2. Шлоскость а проходит через основание AD трапеции АВСD м и N - середины боковых сторон трапеции. а) Докажите, что MN II а. б) Найдите AD, если BC = 4 см, MN = 6 см.
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а) MN || а, так как MN — середина отрезка AD, а середина отрезка параллельна прямой, через которую проходит середина отрезка.
б) AD = 12 см.
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