Question

Find the value of each variable. Write an

equation then solve showing ALL the work
A2x+10°

Answer 1

x = 25

Explanation:

The three straight lines in the sides of the triangle means that ALL 3 SIDES ARE EQUAL.

This is an equilateral triangle. So all 3 angles are equal.

We know sum of 3 angles in a triangle is 180. Since 3 of the angles are equal, each angle is:

180/3 = 60

The top angle is given as "2x + 10", thus we can say "2x + 10" is equal to 60 degrees. Now we equate and solve for x:

`2x+10=60\\2x=60-10\\2x=50\\x=(50)/(2)\\x=25`

The value of x is 25