Target Areas

Determine the area of a target formed by concentric circles.

Dalmatian Day

Cut various circles from paper measuring 9 inches by 12 inches. What’s the area of the circles and the percent of paper wasted after cutting out the circles?

What is This Point?

Determine the properties associated with a special point inside a triangle.

Triangle in a Quadrilateral

Given the ratio of a quadrilateral’s length to width, find the ratio of the area of a special shaded region to the area of the quadrilateral.

Transforming Triangle

What is the perimeter of a rectangle formed from an equilateral triangle?

Bouncing Barney

Follow Barney’s walking pattern to determine how many times he will reach a wall before returning to his starting point.

Casting Shadows

Use a man’s shadow to determine his distance from a tree.

The Third Side

What are the possible perimeters that a given triangle can have?

All Swimmed Out

Determine the shortest path in a noncollinear route using triangles.

Optimal Triangles

Determine the largest area of a triangle given a restricted perimeter.