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26.11.2020 •
Mathematics
Help me find y........
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Ответ:
Step-by-step explanation:
a)
the sum of all angles in a quadrilateral must be 360º
y+88+25+35 = 360
y = 360=88-25-35
y = 212º
b)
the sum of all angles in an octagon must be 1080º
45+45+140+140+6y = 1080
6y = 1080-90-280
6y = 710
y = 710/6
y=~ 118,3º
Ответ:
because the ratio of the length of the 90:45:45 triangle is a:b:c = 1:1: radical 2 so if the length and width of the square is 11, the diagonal will be 11 radical 2.