Предмет: Геометрия, автор: vanya524s

Срочно , 5 ое . Найти x

Приложения:

vanya524s: Забыл сфотографировать , там признаки подобия треугольников

Ответы

Автор ответа: Space273
1

Ответ:5.9

Объяснение:

Треугольники KRT и KRE подобны по двум углам. Углы KER и RKT соответственны, то есть RT  и KR тоже ⇒ k=17/10=1.7. Стороны RK и RE тоже соответствены (так как находятся против равных углов KTR и RKE), то есть x=10/1.7=5.88≈5.9


nktselepov: что-то не то
nktselepov: еще 1 сторона нужна
nktselepov: если по подобию решать
Space273: двух углов достаточно, если они равны, то равен и третий, то есть он подобный, сторона нужна для доказательства равенства треугольников
vanya524s: Спасибо
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