which of the following triangle can be contacted? give reasons. a) angle abc ; angle a =60° , angle b = 70° , angle c =50°?
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we all know that the total of all angles of a triangle are 180 degree .
if 1st angle is 60°
and 2nd angle is 70°
then 180°-(60°+70°)
=180°-130°
=50°
if 1st angle is 60°
and 2nd angle is 70°
then 180°-(60°+70°)
=180°-130°
=50°
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