What is the value of k? L KE 8 in N 1 M ) Intro Don 6 of 10?

If the measure of xyz is 81 what is the measure of yz

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i