Answer:
Option b and c
Step-by-step explanation:
The consistent properties of the right angled triangle is that that their sides are in line with the x and y axes always and that the hypotenuse of the triangle is also a vector that gives the resultant of the vectors in the right angled triangle.
The vectors usually in basic operations like addition subtraction, etc make use of some laws like the triangle law and the parallelogram law of vectors.
These laws make use of a right angled triangle where the sides of the triangle represents vector and hypotenuse gives the vectors' resultant.