Question

The angles of a triangle haves measures of 90°, 65°, and (x-10)°. What is the value of x?

Answer 1

We know that the sum of angles of a triangle are 180°

If you don't know how to find the angles of a triangle

We use the formula,

`(n-2)X180`

Where n replicates the sides of a polygon

Applying the sides into the formula we get

`(3-2)X180\\1X180\\180`

Now in order to find x we sum up all the angles into a equation

90°+ 65°+ x - 10° = 180°

145 + x = 180

We then transpose 145 to the Right Hand Side (RHS)

x = 180 - 145

x = 35°

Hence , the value of x is 35°