Understanding different types of angles and that angles in a triangle sum to 180° can be helpful when classifying a triangle. Recognising line symmetry and rotational symmetry will also help. Look for ...

The humble triangle has been with us from the ancient pyramids to the modern days, being one of the most recognizable, interesting, and useful shapes in geometry. Ancient mathematicians laid the ...

Big Idea – We can describe, measure, and compare spatial relationships. to build on students' knowledge of triangle and to develop students' reasoning with properties of triangle to develop students' ...

This e-example allows students to observe the properties of triangles and quadrilaterals by manipulating the sides, angles, and type. Understand that by similarity, side ratios in right triangles are ...

In this open ended maths lesson, learners explore a sequence of gradually larger shapes and consider what mathematical questions they can ask about them. What is the same and what is different about a ...

Discusses the properties and types of triangles, explaining that a triangle is a closed figure with three sides and angles. It categorizes triangles into equilateral, isosceles, scalene, obtuse, right ...

You’ve probably never thought much about triangles. Thanks to the foibles of history, triangles have spent most of history in the circle’s shadow. Circles are seen as having near-mystical properties, ...

We will refer to the pegs that the rubber band is attached to as nodes. To begin, click on the rubber-band box and drag a rubber band to the geoboard. Click on a node to attach one end of the rubber ...