Geometry

Directions: The diagram shows a square and four semicircles formed using each side of the square as a diameter. What fraction of the square is shaded? Source: Dylan Kane

Directions: Which rectangle is more like a square?  Rectangle A is 13 units by 15 units.  Rectangle B is 2 units by 3 units. Source: Robert Kaplinsky

Directions: What is one possible set of values for the area and circumference of the same circle? Source: Nathan Charlton

Directions: Which circle is bigger: one with an area of 30 square units or one with a circumference of 30 units?  How do you know? Source: Robert Kaplinsky