анеглина урок
Authored by варвара варвара
Mathematics
9th Grade
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11 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
В треугольнике ABC известно, что AB=BC, ∠ABC=108°. Найдите угол BCA. Ответ дайте
в градусах.
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Четырёхугольник ABCD вписан в окружность. Угол ABD равен 51°, угол CAD равен 42°. Найдите угол ABC. Ответ дайте в градусах.
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Высота равностороннего треугольника равна 12√3. Найдите сторону этого треугольника.
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
В треугольнике ABC угол C равен 90°, BC=16, AB=25. Найдите cosB
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
В треугольнике ABC известно, что AB=14, BC=5, sin∠ABC=67. Найдите площадь треугольника ABC.
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Основания трапеции равны 7 и 19, а высота равна 6. Найдите площадь этой трапеции
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Сторона квадрата равна 46. Найдите радиус окружности, вписанной в этот квадрат.
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