Angle relationships - Angles and Lines
Angle relationships
Lessons
Notes:
In this lesson, we will learn:
- Application of Supplementary Angles
- Complementary Angles on Polygons
- Application of Complementary Angles
- Proving Vertical Angles Using Supplementary Angles
- Application of Vertical Angles
- Understanding Adjacent Angles
- Finding Adjacent Angles
Notes:
- Supplementary angles: two angles which add up to 180°, don't necessarily have to be together.
- Complementary angles: two angles which add up to 90°, again, don't necessarily have to be together.
- The "S" of Supplementary stands for "straight", and there are 180° on a straight line.
- The "C" of Complementary stands for "corner", and there are 90° at a corner.
- Vertical angles: angles opposite each other are the same when two lines cross
- Adjacent angles: two angles sharing a common side and vertex, yet they do not overlap.
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Intro Lesson
Introduction to Supplementary, Complementary, Vertical, and Adjacent Angles
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2.
Complementary Angles on Polygons
Which of the following pair(s) is/are complementary angles?
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3.
Which of the following pair(s) is/are complementary angles?
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7.
Given that =125° and =35°.
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9.
Understanding Adjacent Angles
What of the following is/are adjacent angles?
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10.
Finding Adjacent Angles
=30°, =100°.
