Classifying Angles
There are many different classified angles and many other different types of angles. These angles are:
The video below summarises how to classify angles.
Examples:
![Picture](/uploads/2/3/4/0/23408802/5488984.png?191)
1. Find the size of the unknown angle
Solution:
*notice how the angles make a right angle*
g° = 90 - 55
g° = 35
Solution:
*notice how the angles make a right angle*
g° = 90 - 55
g° = 35
![Picture](/uploads/2/3/4/0/23408802/9047995.png)
2. Find the size of the unknown angle.
Solution:
*notice how the angles are on a straight line*
a° = 180 - 140
a° = 40
Solution:
*notice how the angles are on a straight line*
a° = 180 - 140
a° = 40
![Picture](/uploads/2/3/4/0/23408802/7990030.png)
3. Find the sizes of the unknown angles
Solution
m° = 50°
l° = 180 - 50
= 30°
m° was vertically opposite to 50°
l° was on a straight line (adds up to 180°) with m°
Solution
m° = 50°
l° = 180 - 50
= 30°
m° was vertically opposite to 50°
l° was on a straight line (adds up to 180°) with m°
Quiz
1. Find the values of the pro numerals in the diagrams below and explain your answer:
2. Write the values of the variables in the diagrams below and explain: