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  • 30-06-2021
  • Mathematics
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What is the measure of angle 4 if angle 1 = 76 degrees, angle 2 = 27 degrees and angle 3 = 17 degrees

What is the measure of angle 4 if angle 1 76 degrees angle 2 27 degrees and angle 3 17 degrees class=

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devishri1977
devishri1977 devishri1977
  • 06-07-2021

Answer:

Step-by-step explanation:

∠1 + ∠2 + ∠3 + a = 360   {Sum of all angles of quadrilateral}

76 + 27 + 17 + a = 360

          120 + a = 360

                    a = 360 -120

a = 240°

a + ∠4 = 360    

240 + ∠4 = 360

∠4 = 360 - 240

∠4 = 120°

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