Find X using angle sum theory.

Step-by-step explanation:

As we know that -

The sum of all angles of a triangle is 180°

Then,

87° + 33° + x = 180°

x = 180° - 120°

x = 60°

Hence,

The value of x = [60]°

Step-by-step explanation:

sum of internal angle = 180

x + 33 + 87 = 180

x = 180 - 87 - 33

x = 60°

the sum of the lengths of any two sides of a triangle is greater than the length of the third side. if you take the three sides of a triangle and add them in pairs, the sum is greater than (not equal to) the third side. if that is not true, then it is not possible to construct a triangle with the given side lengths.

step-by-step explanation: