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Теория №16 МОГЭ

Authored by Анна Сычева

Mathematics

9th Grade

Used 1+ times

Теория №16 МОГЭ
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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Длина окружности выражается формулой:

С=2πRС=2\pi R

C=πR2C=\pi R^2

C=π2RC=\pi^2R

C=πRC=\pi R

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Площадь круга можно найти по формуле:

S=πR2S=\pi R^2

S=2πRS=2\pi R

S=πR2S=\frac{\pi R}{2}

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Радиус окружности, вписанной в правильный треугольник, можно найти по формуле:

r=a33r=\frac{a\sqrt{3}}{3}


r=a24r=\frac{a\sqrt{2}}{4}

r=a35r=\frac{a\sqrt{3}}{5}

r=a36r=\frac{a\sqrt{3}}{6}

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Радиус окружности Описанной около треугольника, можно найти по формуле:

R=a33R=\frac{a\sqrt[]{3}}{3}

R = (a + b + c) / 3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Вписанный угол равен ____ дуги, на которую опирается

равен целой
равен трети
равен четверти
половине

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Если вписанный угол опирается на диаметр, то он равен:

90 градусов
60 градусов
180 градусов
45 градусов

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

На рисунке угол COB -

вписанный

центральный

нет верного ответа

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