While playing a board game, Leslie landed on a square that directed her to move backward five spaces. Before moving her game piece, she played a card that allowed her to do the opposite of the directions on the square. Which expression represents the change in position of Leslie's game piece after her turn is completed? A. -5 x 1
B. -5 x (-1)
C. -5 + 1
D. -5 + (-1)

The answer is b i’m sure

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