Classroom Exercises 2-5
Page 57
2. angles AOD, DOB, COB, COA, EOH, HOF, GOF, GOE
3. angles POZ, ZOQ, ZOX, ZOY, POY, YOQ, POX, XOQ
4. 50, 40, 50 130
5. 90-x , x , 90-x, 90+x
6. Definition of perpendicular
7. same as 6
8. If 2 lines are perpendicular then they form congruent adjacent angles. That is two angles that are 90 each and share a side.
9. Definition of perpendicular.
10. If two lines form congruent adjacent angles then the lines are perpendicular. Hey this is the converse of #8. I hope you saw that.
11. Definition of perpendicular.