Math quiz on types of angles online. This is a math test in which students will learn to differentiate between types of angles: reflex angles, right angles, obtuse angles and acute angles. Each angle has its characteristic for example, right angles are 90 degrees, acute angles are less than 90 degrees, reflex angles are above 180 degrees etc. This quiz is a math test in which illustrations are used to show different angles. It is up to students to look and be able to differentiate different types of angles. This quiz is for students in 3rd , 4th, 5th , 6th and 7th grades.