10. Error Analysis A student uses the Vertical Angles Theorem and the definition of
complementary angles to conclude
mZPTR = 50 in the figure. What mistake
did the student make?

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle

Letter a i would say

$22. if larry's profit were to minimize by one for every hour his store were to be closed, we would subtract 30 by 8.