### Home > INT2 > Chapter 10 > Lesson 10.1.1 > Problem10-12

10-12.

Polly has a pentagon with angle measures $3x - 26°$, $2x + 70°$, $5x - 10°$, $3x$, and $2x + 56°$. What is the probability that if one vertex is selected at random, the measure of its angle is greater than or equal to $90°$? Homework Help ✎

Solve for $x$ to find all the angle measurements.
The sum of all the interior angles is $540°$.

How many angles out of $5$ are greater than $90°$?