Final answer:
Angiogenesis inhibitors would be used in cancer treatment to cut off the blood supply to the tumor, preventing its growth and spread.
Step-by-step explanation:
Drugs called angiogenesis inhibitors would be used in cancer treatment because all tissues, including malignant tumors, need a blood supply. Angiogenesis inhibitors specifically target the process of angiogenesis, which is the formation of new blood vessels. By inhibiting angiogenesis, these drugs can cut off the blood supply to the tumor, which is necessary for its growth and survival. This can help in shrinking the tumor and preventing its spread to other parts of the body.