SOLUTION: hi please help me i dont understand this problem in equilateral triangle DEF, Measure of angle D = x+y and measure of angle E = 2x-y find x and y please answer thanks a

Question 106401This question is from textbook
: hi please help me i dont understand this problem
in equilateral triangle DEF, Measure of angle D = x+y
and measure of angle E = 2x-y
find x and y
please answer thanks a lott
This question is from textbook

Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
Since it is an equilateral triangle, all angles are 60 deg.
x+y=60
2x-y=60
--------add
3x=120
x=40 deg
y=20 deg
.
Ed
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