Respuesta :

Answer:

Triangle if it is the shaded area

Step-by-step explanation:

Answer:

triangle

Step-by-step explanation:

since this is a triangular prism since it has two triangles on it and the rest are rectangles, the base would be the odd shape out in this case the triangle since it is a prism the other sides are just lateral sides the actual base is a unique shape that defines the prism