ABCD - параллелограмм. Биссектрисы его углов A и D пересекаются в точке K, лежащей на стороне BC. Найдите площадь параллелограмма в см2, если AK=8 см, DK=5 см.
Вариант 20

Quiz
•
Mathematics
•
9th Grade
•
Hard

Ira P
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12 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
2.
DRAW QUESTION
3 mins • 1 pt
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3-m2

3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
В равнобедренную трапецию вписана окружность. L - точка касания LD=16 см. Чему равняет нижнее основание AD?
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
В равнобедренную трапецию вписана окружность и точка касания делит боковую сторону на отрезки, равные 3 см и 12 см. Найди площадь трапеции в см2.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
36
6
±
1296
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2-√3
1-√3
√3-1
√3-2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2√7-√11
√11-√7
8(√11+√7)
2(√11-√7)
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