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Listed under:  Acute angles

Angles are nice but are they cute?

Ever heard of acute angles? What about obtuse angles? Find out which is bigger than a right angle and which is smaller. See how to mark a right angle. And what's a straight angle?

Right angle or acute angle?

What's the difference between a right angle and an acute angle? Find out!

TIMES Module 9: Measurement and Geometry: introduction to plane geometry - teacher guide

This is a 16-page guide for teachers. It provides an introduction to the initial ideas of plane geometry. Points and lines are introduced as fundamental objects in the study of geometry. Angles and parallelism are the initial areas of attention in a more formal approach to geometry that occurs from year 7.

Angles (estimating angle size)

This is a six-page HTML resource about solving problems involving estimating angle size. It contains one video and three questions, two of which are interactive. The resource discusses and explains solving problems to reinforce students' understanding.

Angle Types

An animated tutorial about types of angles followed by an interactive quiz.