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seraphim [82]
3 years ago
5

Find the value of x and unknown interior angle for each triangle

Mathematics
1 answer:
Georgia [21]3 years ago
4 0
The interior angles of a triangle add up to 180 degrees, therefore:

40 + 40 + x-10 = 180
80 + x - 10 = 180
70 + x = 180 
x = 110

< D = 110 - 10 = 100
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