Types of Angles

Start with angle names

The flashcards on this page offer a starting point for learning the words used to describe angles. The deck titled Untitled includes terms such as vertex, right angle, acute angle and obtuse angle. It pairs terms with descriptions, so students can check their understanding as they study.

The mind map Right Angles focuses on right angles and complementary angles. It also notes that an angle should not be assumed from a diagram alone. Use it to connect the name of an angle with the information given about it.

Practice with questions

After looking at the basic terms, try Quiz on Angles. Its questions cover the figure formed by two rays, the unit used to measure angles and the names of different angles. The Angles quiz also asks about angle names, perpendicular lines and complementary angles.

When a question is difficult, return to a flashcard or map and find the relevant term. Then take another look at the question. Teachers can use the same resources to find examples of angle vocabulary and questions for students to practice.

Connect types and relationships

Finding/Classifying Angles includes vertical and adjacent angles, complementary angles and linear pairs. Its cards also include a question about the measurement of vertical angles. The Angles mind map covers measuring angles with a protractor, along with types such as reflex, acute and obtuse angles.

These resources sit in the Types of Angles section of Angles and Parallel Lines in Mathematics. Together, the maps, cards and quizzes let students move between angle names, measurements and relationships within this section. Choose a map or flashcard deck to study, then use a quiz to check your understanding.