Предмет: Геометрия, автор: plamp

Помогите решить, пожалуйста, все, что нужно на фото

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Автор ответа: nazarkinakatya

у - средняя линия трапеции ABCD
y=(AD+BC):2=6
у=РР1
x - средняя линия трапеции ВСР1Р
х=(ВС+РР1):2=5
z - средняя линия трапецииADK1K
z=(AD+PP1)=7

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