Answer:
lol this is new stuff to me
Answer:
Keystone. I think
Explanation:
A keystone, also known as the capstone, is the wedge-shaped stone, typically a round-shaped one.
Explanation: because
Answer: 2nd line with step 1, 5th line with 2 step, 4th line with 3 step, 1st line with 4 step, 3rd line with 5