in the given figure ab=ac=ad.prove that <bcd=90
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Broo first u have to draw a QUADRILATERAL ABCD in which ab=ac=ad
to prove angle BCD=90
proof,
now u have to congrant two big triangles
next by CPCT angle1+angle2=x suppose
x+x=180
x=90
to prove angle BCD=90
proof,
now u have to congrant two big triangles
next by CPCT angle1+angle2=x suppose
x+x=180
x=90
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