A triangle has 3 sides and 3 angles ... This means this is an isosceles triangle. This type of triangle can also be called a right-angled triangle. You can see that there is a right angle ...

You'll be using Sketch 1 of this file which has three different types of triangles - scalene, isosceles, equilateral. Each triangle type has a different colour (pink for scalene, red for equilateral, ...

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