Answers

  • JBM
  • Ambitious
2015-10-11T16:48:19+05:30
X-20 + x-40 + x/2-10 =180 (angle sum property)
x+x+x/2-20-40-10=180
(2x+2x+x)/2--70=180
5x/2=180+70
       =250
5x=250*2
5x=500
x=100 
x-20=80,x-40=60,x/2-10=50-10=40

the angles of triangle are 80,60,40
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2015-10-11T17:47:34+05:30
Given angles are (x-20),(x-40),(x/2-10) We know that the sum of all angles in a triangle =180 degrees (x-20)+(x-40)+(x/2-10)=180 2x-70+x/2 =180 (4x-140+x)/2=180 5x-140=360 5x=500 x=100 degrees Angles are, (x-20)=100-20=80 (x-40)=100-40=60 (x/2-10)=100/2-10=50-10=40 Therefore the angles are 80,60,40.
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