Triangles and Polygons

Triangles and other polygons play a role in our lives everyday. We will be studying these shapes in class over the next couple of weeks. Try this crossword puzzle without any reference materials first to test your background knowledge. If you get stuck, use your textbook, computer or math dictionary to help you. Good luck! (** Note: If your answer is more than one word, do not put any spaces between words when you fill in the puzzle.)

Rhombus parallelogram with all congruent sides

Pentagon a polygon with six sides

Obtuse Triangle a triangle with no congruent sides

Acute Triangle a triangle with one right angle

Parallelogram a triangle with one angle greater than 90 degrees

Equilateral Triangle a simple closed figure formed by three or more line segments

Triangle a parallelogram with four right angles

Polygon a polygon with eight sides

Hexagon a triangle with three congruent sides

Right Triangle a triangle with at least two congruent sides

Scalene Triangle a polygon with three sides

180 degrees a triangle with three angles that are less than 90 degrees

Trapezoid a quadrilateral with 2 pairs of parallel sides

Square the sum total of the three angles of any triangle

Octagon a polygon with five sides

Congruent figures that have the same size and shape

Rectangle a parallelogram with congruent sides and congruent angles

Quadrilateral quadrilateral with exactly one pair of parallel sides

Decagon a polygon with four sides

Isosceles Triangle a polygon with ten sides

Use the "Printable HTML" button to get a clean page, in either HTML or PDF, that you can use your browser's print button to print. This page won't have buttons or ads, just your puzzle. The PDF format allows the web site to know how large a printer page is, and the fonts are scaled to fill the page. The PDF takes awhile to generate. Don't panic!