Answer:

1.

because they don't always line up on the same angle and it also relies on the shapes and sizes of the object

2.

Shadows are formed because light travels in straight lines. Shadows are formed when an opaque object or material is placed in the path of rays of light. The opaque material does not let the light pass through it. The light rays that go past the edges of the material make an outline for the shadow.

Step-by-step explanation:

Pa brainliest na lang po ty :)