An equilateral triangle of side length 1 is cut out of the middle of each side of a square of side length 3, as shown. What is the perimeter of the resulting gure?

3. In the diagram, P QRS is a square and P T Q is an equilateral triangle. What is the measure of \T P R? 90

The tick marks show the division of the cylinder into four parts of equal volume. Which of the following is the best estimate for the volume of chocolate milk in the cylinder as shown? (A) 24 …

Suppose the game begins with 9 toothpicks. Gwen begins by removing 2 toothpicks. Explain how Gwen can always win, regardless of how Chris plays. In the diagram, 4ABC is equilateral with …

Find the area of an equilateral triangle with side length 2. Determine the area of a regular hexagon with side length 2.