Posted by **dw** on Wednesday, February 8, 2012 at 6:48pm.

1-how are perpendicular lines and intersecting lines alike? how are they different?

2-writing to explain- how can you use a right angle to decide how to name another angle?

- 3 grade math -
**Shay**, Wednesday, February 8, 2012 at 7:07pm
They both intersect. Perpendicular lines intersect to form right angles, while intersecting lines just intersect. A right angle is 90 dergees. Any angle less than that is an acute angle. Any more is an obtuse angle and a straight line is 180›.

- 3 grade math -
**dw**, Wednesday, February 8, 2012 at 7:18pm
i just want to now is this 1 answer or for both answer 1 and 2 so i can explain to my son thank you

- 3 grade math -
**Ms. Sue**, Wednesday, February 8, 2012 at 7:29pm
Shay answered both questions.

- 3 grade math -
**dw**, Wednesday, February 8, 2012 at 7:58pm
thank you very much ms. sue and shay

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