Rays, angles and angle bisector
Activity 1
Did you fully understand the terms? In case you had any doubts, write them here.
Look them up on the internet
1- What are acute, right and obtuse angles?
Measuring an angle - Amplitude
The measurement of an angle is a positive real number related to it. The measure of an angle is called the angle amplitude.
Protractor
Activity 2
In the construction above, move points B or C. What do you see?
Consecutive and Adjacent Angles
Vertically Opposite Angles
Property
Question
What have you noticed? Write an argument to justify your answer.