Предмет: Геометрия, автор: acmix617

ABCD-ромб, периметр ABCD=24см. , вугл A=60градусов, M належыць AB, K належыць AD, надо найти MK
помогите пожалуйста!

Ответы

Автор ответа: semkawf

Ответ:

Объяснение:

У ромба все стороны равны, значит AD=AB=BC=CD=P:4=24:4=6. Треугольник ABD-равнобедренный (т.к. AD=AB) и угол а=60 градусов, значит треугольник ABD-равносторонний. Следовательно AD=AB=DB=6. MK-средняя линия и МК параллельна DB, значит МК=DB:2=6:2=3. Ответ: 3.

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