Как доказать что четырёхугольник вписанный?
Геометрия повторчик ЕГЭ

Quiz
•
Mathematics
•
11th Grade
•
Easy
Danka Tvoi Repetitor
Used 1+ times
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Сумма противоположных углов = 180
там четыре угла
Сумма углов 360
ctgA = b/c
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какое свойство тупых углов неверно?
sinA = sinB
cosA = cosB
tgA = -tgB
ctgA = -ctgB
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
свойство суммы углов в треугольнике?
360°
270°
90°
180°
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Найдите синус угла справа, если a = 3
c= 10 b =5
0,5
0,3
0,03
2
0,05
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
катет напротив угла 30 градусов....
Равен гипотенузе
относится к гипотенузе как квадрат коэф. подобия
равен половине гипотенузы
равен 2/1 гипотенузы
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какая формула для площади треугольника через высоту?
S = √(p(p-a)(p-b)(p-c)), p=(a+b+c)/2
S = 1/2 * p * r
S = 1/2 * a * c * sinA
S = 1/2 * a * h
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какая формула для площади треугольника через угол?
S = 1/2 * a * h
S = 1/2 * p * r
S = 1/2 * a * c * sinA
S = √(p(p-a)(p-b)(p-c)), p=(a+b+c)/2
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