how to do this...................... above sum
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according to the diagram
angle2=angle3
=>angle3=2x-5
but angle1+angle3= 180°
and angle1=3x+5
=>[3x+5]+[2x-5]=180°
5x=180°
x=180/5
x=36
angle2=angle3
=>angle3=2x-5
but angle1+angle3= 180°
and angle1=3x+5
=>[3x+5]+[2x-5]=180°
5x=180°
x=180/5
x=36
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