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irga5000 [103]
3 years ago
6

Triangle ABC is congruent to triangle DFE. Find y.

Mathematics
1 answer:
kirza4 [7]3 years ago
6 0
Angles D and A are equal (from the statement bc the name of triangle starts with A and D)

Now set an equation of the angles so 
45 = 5y -10

Add 10 on both sides

55 = 5y 
divide by 5

y = 11
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