Regular Octagons and Squares Can Form a Tiling of the Plane

question 32

Multiple Choice

Regular octagons and squares can form a tiling of the plane that has at every vertex:

• A) two octagons and two squares.
• B) two octagons and one square.
• C) one octagon and two squares.
• D) one octagon and three squares.

---

Definitions:

Voluntary Phase

The initial stage of swallowing controlled consciously, where food is pushed by the tongue into the throat.

Peristalsis

Wave-like muscle movements that transport food through the digestive tract.

Pyloric Sphincter

The ring of muscle that regulates the passage of food from the stomach to the duodenum of the small intestine.

Gastric Ulcer

A sore on the lining of the stomach or duodenum often caused by infection, medication, or chronic stomach acid irritation.