So far I've been able to "see" why/how they do every saxon problem, until this one.
This is Problem 20 on Lesson 68 (pg. 469). It shows a parallelogram with a 60 degree corner and then the parallelogram is divided in half across the other two corners. Then we're suppose to find the angles. The solution in the book for question a shows 90/2 = 45, which is fine, but WHY did they choose 90 degrees? There are no markings saying what any of the other corners angles are? I looked back at the two lessons that the problem references and I don't get it. I know about opposite interior and all that, and none of that tells me why the solution is 90/2...
Please help me understand WHY! I can do the math once I understand why.
Postby TriciaMR » Mon Feb 25, 2013 6:10 pm
Oh, never mind. I see it now... There are two angles that are congruent - which means they add up to 90 degrees.
Julie in MN wrote:Hi Trish <wave>
glad you figured it out, that's always so fun! Maybe your discovery will help someone else, who knows?!