one of the angle is 140 degree and the other two angles are equal. find the measures of the angles of a triangle.

Measures of the first angle= 140

Sum of all angles in triangle is 180

Other two angles  are equal, so they are both x

180=140+x+x

180-140=2x

20=x so the other angles are both 20 degrees

  • 2

 according to angle sum property of a triangle, the three angles of a triangle add up to 180.

if one angle is 140 and the other two angles are equal we get the equation  140+x+x = 180

                                                                                                                                            140+ 2x =180

                                                                                                                                             2x = 180-140

                                                                                                                                             2x = 40

                                                                                                                                             x = 40/2 

therefore x = 20. so the measures of the angles are 140, 20 and 20

  • 1

let the sum of the unknown angles be x

the angles of a triangle(their sum)= 180.

1st angle= 140.

x= 180-140= 40.

each angle= x/2= 40/2= 20.

the measures are= 140, 20 and 20 degrees

  • 0

The other two angles measure 20 degrees each by the angle sum property which states that the sum of all angles of a triangle is equal to 180 degrees.

  • 1
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