How many triangles can be constructed with angles measuring 90 degree, 60 degree, and 60 degree? a) oneb) more than one c) none

The correct option is: Option (C) None

Explanation:
All triangles must satisfy the following condition:

"The sum of all the angles of a triangle should be 180°."

90° + 60° + 60° = 210°

210° > 180°; therefore, the condition of a triangle is NOT satisfied.

Hence the correct option is "(C) None." (as the condition of a triangle is not satisfied)