Question

Which of the following pair of angles can be used to construct a triangle with any given side

120°, 30°
70°, 120°

Answer 1

Answer:

1)120° and 30°

Step-by-step explanation:

This is because here two angles are given. The sum of all three angles of triangle is 180.

in the first one the sum of Rai angles 150 so a third angle is left

but in second the Sum of to angle is 180 and doesn't have space for 3rd angle that's why 1 is there answer.

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Answer 2

Answer:

120°+30°+x =180°[angle sum property ]

150°+x= 180

150°<180°

hence it is possible to be triangle

70°+120°+y=180

190°>180

hence it is not possible to be a triangle