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Classroom Ex 2-5

Page history last edited by Math in a Box - Susan Johnsey gm 9 years, 9 months ago

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.