Videos, worksheets, stories and songs to help Grade 6 students learn about types of angles: acute angles, right angles, obtuse angles, straight angles, reflex angles and full rotation angles.
More Grade 6 math Lessons
Right Angle (Quarter-Turn) – Two rays that connect to form a square corner.
Straight Angle (Half Turn) – Two rays that connect to form a straight line.
Acute Angle – An angle with a measure less
than a right angle (half turn)
Obtuse Angle – An angle with a
measure greater than a right angle but less than a straight angle.
Reflex Angle – An angle with
a measure greater than a straight angle.
Note that an acute or obtuse also has a reflex angle on the outside of its arms.
Introduction to Angles and Angle Types
This video shows you what angles are, how they are created, and the main types of angles we use in math.
Identify acute, obtuse and right angles.
This video gives a basic definition of what an angle is. It shows how angles are measured. It demonstrates the measuring of angles with a protractor. It goes over different classifications of angles such as acute angles, right angles, obtuse angles, straight angles, reflex angles and full rotation angles.
Naming Angles – Vertex, Sides
Name the vertex and sides of an angle and give all the possible names of the angle.
Angles Music Video
A song about the types of angles and the degrees of the different types of angles.
Types of Angles
This video illustrates acute, right, obtuse, straight, reflex, and full angles.
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