Angles on a line
#anglesonaline#anglesaddto180#lesson10
Use the applet to practice finding the value of the missing angle.
Practice first before you answer the questions
You can change the value of all the angles by moving the points.
Find the missing angle ,<ECF value and check your answers.
If <BCD is 52° and <DCE is 48° and <FCA is 32°, what is the measure of <ECF?
Are these supplementary angles?
Why or Why not?
What do you know about angles on a line?