Answer
x=36 degrees
Work Step by Step
We know that the sum of the angles of a triangle are 180 degrees. We will call the unknown angle x. This gives:
$x+72+72=180$
x=36 degrees
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.