Doug spends three hours every Saturday morning mowing the lawn while his son, Michael, watches cartoons on TV. The last time that Michael tried to mow the lawn, it took him three hours to complete half the job. Still, Doug figures that if he borrows his neighbor's lawn mower and he and his son work together, this will give his son a sense of accomplishment and a positive work ethic. a. Since Doug is able to mow the whole lawn in 3 hours, what fraction of the lawn can he mow in 1 hour?

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

Istg idk..if there all the same length there all the same number but use google

The answer is something i don’t know