Find the value of the angle of a triangle if it is known that it is equal to 5/9 the sum of all the angles of the triangle.

The sum of all the angles of a triangle is 180 °. To find the value of the angle we need, we need to find how many degrees are 5/9 of 180 °. Let’s write the required angle as x.

x = 180 ° * 5/9.

x = (180 ° * 5) ÷ 9.

x = 100 °.

Answer: The angle of the triangle is 100 °.



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