Proof: Quadrilateral Sum Theorem 1
1 = 80
3 = 95
5 = 100
4 =85
1.
1.
2 +
3 +
4 +
5 = 360
1 = 80
4 = 85
2 = 80
5 = 100
80
+ 95
+
4 + 100
= 360
; 275
+
4 = 360
3 = 95
ProveIt!
by Michael Ferraro <
mferraro@balstaff.org
>.
Copyright ©2010. All rights reserved.