A third grader mentioned that all perpendicular lines are intersecting lines. Is the student correct? How do you know?
yes he is correct! perpendicular lines cross and make 90 degree angles.
Gabe
Another
student asks for your help. “I can’t
keep all the angles straight! Which one is acute? Obtuse? Right? And what is a
straight angle?”
The acute angle is with in 1 degrees- 89 degrees.
obtuse angle is with in 91 degrees-179 degrees.
A right angle is exactly 90 degrees and a straight angle is exactly 180 degrees.
Mace
No comments:
Post a Comment