Posted by **crystal** on Thursday, January 13, 2011 at 10:48pm.

Can a parallelogram have four acute angles justify your answer.

- geometry -
**helper**, Thursday, January 13, 2011 at 11:01pm
Sum of measures of interior angles of a polygon of n sides = (n - 2)*180 deg.

parallelogram = 4 sides

so, n = 4

(4 - 2)*180

2*180 = 360 deg in a parallelogram

can you answer this now?

- geometry -
**crystal**, Thursday, January 13, 2011 at 11:19pm
the answer is yes

- geometry -
**Reiny**, Friday, January 14, 2011 at 12:48am
No, you cannot have 4 acute angles

since "acute" means less than 90°

4 x (something less than 90) < 360

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