Answer:
Question 7: B, right angle.
Question 8: A, 35 degrees.
Explanation:
Question 7: Since the triangle contains a 90-degree angle, or a right angle, it is classified as a right triangle.
Question 8: The sum of all three angles of any triangle is 180, so add 40 and 105 to get 145. Subtract 180 by 145 to get 35.
I hope this helped! :-)