An obtuse triangle must have an angle greater than 90degrees (cannot equal 90). Therefore, A. would be the correct answer. This is because A. is the only set of angles that includes an angle greater than 90. Also, all angle measures add up to equal 180degrees.
If angles are vertical it means opposite angles are the same size. Therefore the measures of the other three angles are 72 degrees, 108 degrees, and 108 degrees. I hope this helps!
Answer:
(5,5)
(-1, 1)
(2,0)
(4,1)
Step-by-step explanation:
He has 12 green marbles. 4+9=13 and 39/13=3 so 4x3=12. to check, we can do 9x3=27 as well and add our results. 12+27=39 so we know we are correct.
