The value of x in the triangle is 5 ( option C)
What is sum of angle in a triangle?
The sum of angles in a triangle is always 180 degrees. This fundamental geometric property holds true for all types of triangles, whether they are equilateral, isosceles, or scalene.
The sum of angle in a triangle is 180°
therefore;
2x + 53 + 5x + 2 + 90 = 180
collect like terms
2x + 5x + 90 + 55 = 180
7x = 180 - 145
7x = 35
x = 35/7
x = 5
Therefore, the value of x is 5