Background You'll be using Sketches 2, 3, and 4 of this file to explore which coloured triangles could fit into the given triangle outlines. Each triangle type has a different colour (pink for scalene ...

A scalene triangle has no sides that are congruent. Again, if the measurements were not labelled, you would still know it is a scalene triangle because there are not any tick marks on the diagram.

Working with Sketch 5 Project Sketch 5 on the screen. Introduce the term scalene (pink triangle) and equilateral (outline). Have one student drag the scalene triangle to review its properties. Have ...