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  • 12-08-2019
  • Mathematics
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Help me on isosceles and equilateral triangles problems. Find the value of x in the triangle shown below.​

Help me on isosceles and equilateral triangles problems Find the value of x in the triangle shown below class=

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sqdancefan
sqdancefan sqdancefan
  • 13-08-2019

Answer:

  x° = 61°

Step-by-step explanation:

Both of the "unknown" angles in the triangle are equal, since their opposite sides have equal lengths. (The triangle is isosceles.) The sum of angles in a triangle is 180°, so we have ...

  58° + x° + x° = 180°

  2x° = 122° . . . . subtract 58°, collect terms

  x° = 61° . . . . . . . divide by 2

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