Area Formulas
Explore the similarity of the area formulas for quadrilaterals and triangles.
Author Archive for: corrill
Entries by InterMath
Table Arrangement
Explore seating arrangements using square tables.
Interior Angles
Explore the sum of interior angles of a quadrilateral.
Integral Sides
Explore area and perimeter of quadrilaterals whose sides have integral length.
Overlapping Squares
Make more squares from less.
Perplexing Pentominoes
Explore with pentominoes.
Leaving Squares
Remove toothpicks from the figure to leave five squares.
Shaded Squares
Determine the number of “outside” squares in a given figure.
Relationships
Explore various relationships in a given construction involving a parallelogram.
Quadrilaterals Inscribed Inside Polygons
How many quadrilaterals can be constructed using the vertices of polygons?