JL is the total length of the line segment. We know that JK is 15 units long and that KL is 16 units long. So, you would add these numbers (15 & 16) together to get the total length of the line segment. Hope this helps! :)
1 is correct for complementary angles and 1 is also correct for supplementary angles. A complementary angle is when two measures of 2 different angles equal 90 same goes for supplementary angles but they have to equal 180
