A side of the triangle below has been extended to form an exterior angle of 121°. Find the value of xx.

To find the value of x, we can use the property that the measure of an exterior angle of a triangle is equal to the sum of the measures of the two opposite interior angles.

Let's call the two opposite interior angles a and b.

The sum of the measures of the exterior angle and the two opposite interior angles is 180° (since the angles in a triangle add up to 180°).

So we can write the following equation:

121° + a + b = 180°

To find the value of x, we need to solve for a or b. Let's choose to solve for a.

First, subtract 121° from both sides of the equation:

a + b = 180° - 121°

a + b = 59°

Now, we can substitute the value of a in terms of x using the given information that x is an interior angle:

a = x°

So we have:

x° + b = 59°

To solve for x, subtract b from both sides of the equation:

x° = 59° - b

Therefore, the value of x is 59° - b.

wrong.