Theorem 3 Betweenness of Rays
You will have to study the proof on page 95 carefully. Ask for help if you need it.
Theorem 4 Angle Bisector Theorem
Look at bisecting an angle
Try this vocabulary quiz
Try measuring angles
(these seem difficult; you may need help)
In this group, you are asked to match the statements with their theorems or definitions.
Hint: Look back at pages 94-95
#23-26 -- skip these ones.
This is algebra review.
ASN = 5x
NSD = 3x + 28
and you know because SN is bisecting the angle that both these two angles are equal,
ASN = NSD
Knowing that, can you do the rest?
- Look at the facts about the figure.
- Hint: AJD + DJE = AJE (because of the Betweenness of Rays)
- Substitute the terms for the angle names, as you did in the last group of problems, and then you have an algebra problem that you can solve.
- When you see problems like this, ALWAYS look for ways to do this.
- Do these proofs with me.
This was a long lesson.... tomorrow will be an optional day.