Answer:
a. 1 is a right angle because x equals to 10 because of the pythagorean theorem.
b. 1 is an obtuse angle because x could be greater than 10, making 1 an obtuse angle.
c. 1 is an acute angle because x could be less than 10, making 1 an acute angle.
d. x could be 8, making the triangle isoceles.
e. x could be less that 3, making the triangle not possible