norris100607
norris100607 norris100607
  • 10-10-2020
  • Mathematics
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4) The triangle on the right is an equilateral

Find the value of X and Y

4 The triangle on the right is an equilateral Find the value of X and Y class=

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NameNeverMatters
NameNeverMatters NameNeverMatters
  • 10-10-2020

Answer:

angle Y is 29 degrees

angle X is 120 degrees

Step-by-step explanation:

Well, if the triangle is an equilateral, then all the angles are equal to

60 degrees

that means the the angle at the top point is 60+31 = 91 degrees

the right point is 60 degrees

every triangle has 180 degrees total

180 - (91+60) = 29 degrees

NOW FORGET ABOUT THE EQUILATERAL FOR A BIT

180 = 31+x+29

simplify

180 = 60+x

subtract 60 from both sides

120 = x

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