Which number is not equivalent to the other three?

select the best answer from the choices provided.

25%

2.5

0.25

2/8

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°