Sports Synchronized swimmers form angles with their bodies, as shown in the photo.
Look at the diagram. What do the angle marks tell you?
The angle marks tell you which angles are congruent.
If
So,
Use the photo in Problem 3.
If
The Angle Addition Postulate is similar to the Segment Addition Postulate.
If point B is in the interior of
Algebra If
How can you use the expressions in the diagram?
The algebraic expressions represent the measures of the smaller angles, so they add up to the measure of the larger angle.