Angle relationships

Now Playing:Angle relationships – Example 0a

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 $\angle AOB$ .