Question

what is the greatest number of right angles a triangle can contain?
a. 1
b. 2
c. 3
d. 0

Explanation:

The sum of interior angles of a triangle is 180 degrees. A right - angle is 90 degrees. If there were 2 or more right - angles, the sum of those angles alone would be 180 degrees or more, which is not possible for a triangle. So a triangle can have at most 1 right - angle.

Answer:

A. 1