A Student earned a grade of 80% on a math test that had 20 problems. How many problems on this test did the Student answer correctly? (put the answer and explanation if you can please.) ​

In the given diagram, ∠4 = 45°, ∠5 = 135°, and ∠10 = ∠11. part a: solve for the values of the remaining angles. show all your work for full credit. part b: use complete sentences to describe the angle relationship between the following angle pairs: 1. ∠4 and ∠1 2. ∠7 and ∠5 3. ∠9 and ∠10