Triangles Reference Chart – Types and Angles

2D Geometry Shapes Triangles Reference Chart

Learning about triangles doesn’t have to be tricky. This reference chart makes it easy for students to understand the different types of triangles, including acute, right, and obtuse angles, as well as equilateral, isosceles, and scalene sides. The chart comes in a full-colour version that works beautifully as a classroom wall display, on a whiteboard, or even projected digitally. There is also a black-and-white version that fits perfectly in student binders or interactive notebooks, providing a handy reference sheet that students can keep at their desks.

This resource is ideal for lessons on 2D shapes and triangle classification. It’s especially helpful for visual learners who benefit from seeing concepts clearly illustrated, and it makes a useful addition to maths centres, classroom displays, or study materials. Using the chart regularly can help students build confidence in recognising and naming different triangle types while reinforcing key geometry vocabulary and concepts. Teachers will also appreciate the time saved, since the chart is ready to print and use immediately. It works best for students in Years 3–6, but it can also serve as a helpful review tool for older students. Whether you display the colour chart on your maths wall or provide the black-and-white version for individual students, this reference chart is a flexible and practical resource for any geometry unit.