Question

In the following question measures of three angles are given whic of these can form a triangle

(A). 45°,6 1°,73°

(B) 63° ,37° ,80°

Answer 1

We know that the sum of all angles of a triangle is 180°.

(A) 45° + 61° + 73° = 179°

Since the sum is not 180° they cant form a triangle.

(B) 63° + 37° + 80° = 180°

Since the sum of angles is 180° they can form a triangle

Answer 2

(B) 63° ,37° ,80°

will form ∆ (triangle)because ,

sum of measure of this angles is 180°...


and,
in (A). 45°,6 1°,73°
sum of measure of angle is 179 °

so , according to angle sum property of triangle , it will not form triangle .


hope this will understand you ....