Please assist me with these geometry questions

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane

Solve this and show you’re work step by step ! -5 3/4+3h< 9 1/4 -

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?