construct a triangle
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1+2+APB=360 (Angle sum property of a triangle)
2angle 1+ 2 angle 2+ 2 angle APB=360
A+B+2 APB=360....(1)
A+B+C+D=360 (Angle sum property of a quadrilateral)......(2)
From 1 and 2
A+B+2 APB=A+B+C+D
2 APB=C+D
2angle 1+ 2 angle 2+ 2 angle APB=360
A+B+2 APB=360....(1)
A+B+C+D=360 (Angle sum property of a quadrilateral)......(2)
From 1 and 2
A+B+2 APB=A+B+C+D
2 APB=C+D
abhinanddsunil:
This is the answer
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Answer:
Step-by-step explanation:
1+2+APB=360 (Angle sum property of a triangle)
2angle 1+ 2 angle 2+ 2 angle APB=360
A+B+2 APB=360....(1)
A+B+C+D=360 (Angle sum property of a quadrilateral).(2)
From 1 and 2
A+B+2 APB=A+B+C+D
2 APB=C+D
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