[Free Registration/Login may be required to access all resource tools.] Find interior angle measures of polygons by drawing diagonals to create triangles.

This site gives a description of diagonals along with a visual representation. Be sure to follow the links to related terms, everyday examples, challenging problems, more information, and the interactive check point involving diagonals...

This resource explores the diagonals of quadrilaterals. The interactive tool allows learners to examine intersecting line segments in a variety of ways. Topics discussed are perpendicular diagonals, congruent diagonals, and bisected...

This site gives a definition and examples of a diagonal matrix. The site also contains many links to other related Math World sites.

In this activity, students will explore the properties of the diagonals of various quadrilaterals. They will use a quadrilateral hierarchy chart to examine the relationship between the quadrilaterals.

This site includes a basic definition for what a diagonal of a polygon is along with a pictoral example.

This resource explores the bisectors of quadrilaterals. The interactive tool allows learners to draw quadrilaterals with perpendicular bisectors, congruent perpendicular bisectors, and congruent bisectors.

Torre Diagonal Zero Zero (Barcelona)

Measure the lengths and diagonals of three squares with a ruler. Look over your measurements and try to come up with a rule of thumb for estimating the length of a diagonal if you know the length of a side.

Incorporating concepts in algebra, number sense, patterning, data collection, and geometry, this activity engages students in various hands-on activities to explore the relationship between regular polygons and the number of diagonals...

Students learn about translations. Algebra topics discussed are parent functions, horizontal translations, vertical translations, and diagonal translations. The learning exercise consists of examples and an assessment about types of...

This site provides an online rectangular prism calculator. Using any three of the six attributes (length, width, height, surface area, volume or diagonal), students can calculate the other three attributes. The calculator allows students...

Find a definition of regular polygon, and learn how to calculate the internal angle, external angle, and number of diagonals of a regular polygon. Also, learn how to find the area of regular polygons.

Explore this course on infinity the including topics of the continuum hypothesis, Cantor's diagonal, and countability.

Develop problem solving skills working with pentagons and then check your results.

WebMath will calculate the side length, diagonal length, perimeter, area, or volume, given the side, perimeter, diagonal, or area. This site also displays formulas for a square.

Given examples of quadrilaterals and their component parts, the student will use explorations and concrete models to prove a quadrilateral is a parallelogram, rectangle, square, or rhombus using opposite sides, opposite angles, or...

Get the definition and properties of a polygon. Then explore such topics as: 1) types of polygon 2) area 3) Perimeter 4) angles associated with polygons and 5) names of polygons.

Based off of the hit television show NUMB3RS, this lesson shows students different ways to find centroids of regular polygons. The traditional way (using medians) is presented, as well as the triangulation method, the diagonals method,...

In these problems, students are asked to find: point of intersection of two lines; coefficients that make two lines parallel; intersection of diagonals of a quadrilateral; and the point of intersection of three planes.

In this activity, students use the Pythagorean theorem to compute the diagonals of rectangles.

An area problem involving diagonals of a tiled floor.

How would you translate 'Hogwarts' or 'Diagon Alley' or even 'Harry Potter'? Vox explains some of the very specific pitfalls of trying to translate J.K. Rowling's Harry Potter series. [5:54]

[Free Registration/Login Required] Students are given the two diagonals of a kite of rhombus and are to determine the area and perimeter. Click challenge me to answer practice questions and click learn more to watch a video.