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Angle and Types of Angles

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Planes and Angles

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Angle and Types of Angles

Math Foundations

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Observe and describe the relationship between the angles A and B and properties of their sum by changing the positions and measures of the angles.

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Now You Know

After completing this tutorial, you will be able to complete the following:

  • Measure and draw right, acute, obtuse, full, and straight angles.
  • Describe pairs of complementary, supplementary, adjacent, and congruent angles.

Everything You'll Have Covered

An angle is formed when two noncollinear rays share an endpoint.

The angle below is formed by rays BA and BC. The angle can be labeled according to the points of the angle or according to the vertex or endpoint of the angle In this Activity Object, the angles will be named based on the endpoint.

Angles are measured in degrees and can be categorized by their measurements.

We use a protractor to measure angles.

A right angle measures exactly Many of the objects in our world are created using right angles: the edges of notebook paper, corners of walls and doors, the edges of picture frames.

An acute angle is an angle measuring less than

An obtuse angle is an angle measuring more than

A straight angle is an angle measuring exactly

A full angle is an angle measuring exactly

Angle pairs can be classified based upon their relationship to one another.

Angles sharing a common ray are called adjacent angles. The angles A and B in this Activity Object are adjacent.

Two angles are called supplementary if their measures add up to

These two angles are supplementary because

Two angles with the same measurement are called congruent angles. The two angles shown above are considered to be congruent because they both measure

Complementary angles are angles whose measures add up to These two angles are complementary because

Tutorial Details

Approximate Time 20 Minutes
Pre-requisite Concepts types of angles
Course Math Foundations
Type of Tutorial Dynamic Modeling
Key Vocabulary angle, acute angle, adjacent angles