Angle relationships

Now Playing:Angle relationships – Example 0a

Introduction to Supplementary, Complementary, Vertical, and Adjacent Angles
Introduction to Supplementary, Complementary, Vertical, and Adjacent Angles
What are supplementary angles?
Introduction to Supplementary, Complementary, Vertical, and Adjacent Angles
What are complementary angles?
What are vertical angles?
What are adjacent angles?

Application of Supplementary Angles
Find the value of $x$ .
Complementary Angles on Polygons
Which of the following pair(s) is/are complementary angles?
1. $\angle ABD$ and $\angle ACD$
2. $\angle ABC$ and $\angle CBD$
3. $\angle ACB$ and $\angle CBD$
Which of the following pair(s) is/are complementary angles?
1. $\angle CDB$ and $\angle ADB$
2. $\angle ABD$ and $\angle CBD$
3. $\angle BCD$ and $\angle BAD$
Application of Complementary Angles
If $\angle AOB=-9x+29$ and $\angle BOC=2x+82$ , find the value of $x$ .
Proving Vertical Angles Using Supplementary Angles
Use the idea of supplementary angles to prove for vertical angles.
Application of Vertical Angles
Given that $\angle m=$ 43°, find the remaining angles in the diagram.
Given that $\angle AOC$ =125° and $\angle DOE$ =35°.
1. Find $\angle BOC.$
2. Find $\angle EOB.$
If $\angle AOD$ =3x+14 and $\angle BOC$ =7x-18, find the value of x.
Understanding Adjacent Angles
What of the following is/are adjacent angles?
Finding Adjacent Angles
$\angle AOB$ =30°, $\angle AOC$ =100°.
1. Are $\angle AOB$ and $\angle AOC$ adjacent?
2. Find an angle that is adjacent to $\angle AOB$ .