Topic for January 15, 2014: Solving for the value of x at one of the vertices of a triangle if its area is given. Please visit the website to see the details. Thanks and have a nice day to everyone. If you have any questions, please send me an e-mail.

Miquel's theorem: A diagram showing circles passing through the vertices of a triangle ABC and points A´, B´ and C´ on the adjacent sides of the triangle inte...

Here's a page for use with the book THE GREEDY TRIANGLE by Marilyn Burns. As the triangle changes its shape, students build each shape with marshmallows and toothpicks and record information about sides, angles, and vertices.

How to construct a circle through the 3 vertices of a triangle with compass and straightedge or ruler - Math Open Reference

How to construct a circle through the 3 vertices of a triangle with compass and straightedge or ruler - Math Open Reference

Topic for January 20, 2014: Getting the coordinates of the vertices of a triangle if the midpoints of the sides are given. Please visit the website to see the details. Thanks and have a nice day to everyone. If you have any questions, please send me an e-mail.

Topic for January 21, 2014: Getting the coordinates of the third vertex of a triangle if the two vertices and the point of intersection of the medians are given. Please visit the website to see the details. Thanks and have a nice day to everyone. If you have any questions, please send me an e-mail.

distance of ortho center from sides and vertices of a triangle

Triangle Measurement Interactive Notebook Page - showing proof that the interior angles of a triangle have a sum of 180 degrees. So much better than just telling students. Show the proof.

1.6A Audience: First Grade. Behavior: Classify 2-dimensional shapes using informal geometric language. Condition: Ancho Chart. I would introduce some familiar 2D shapes and ask the students to identify how many sides and vertices using an anchor chart.

Procyon - The Little Dog Star

### You Better Shape Up

Shape pack with craftivities for 11 shapes!

FREEBIE! This activity helps students discover the angle sum property of triangles by cutting off the angles of a triangle and pasting the vertices together, which meet to form a straight line (180°).

Maedian.com is a domain name for sale at Novanym.com, and a distinctive re-spelling of 'median'. Generally, the median relates to the middle, or to the division of something into equal parts. In arithmetics or statistics, the median is the middle number in a given sequence; in geometry its a straight line from a vertex of a triangle to the midpoint of the opposite side. These broad but fundamental concepts give this brandname a sense of balance and precision.

The Howgill Fells are hills in Northern England between the Lake District and the Yorkshire Dales, lying roughly in between the vertices of a triangle made by the towns of Sedbergh, Kirkby Stephen and Tebay. The name Howgill derives from the Old Norse word haugr meaning a hill or barrow, plus gil meaning a narrow valley.

Cevian Triangles - A cevian is a segment drawn from a vertex of a triangle to the opposite side. In this case the point on the opposite side is a trisection point. These cevians create seven triangles, and each triangle has an area that is a multiple of 1/21 of the area of the original triangle. Can you find the area of each region?

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