In an isosceles triangle ABC, the measure of angle B is 100 degrees, AB =
BC = a, and AC = b. Prove that: (1) a3 + b3 = 3a2b; (2)
.
This entry contributed by Sumith Peiris, Moratuwa, Sri Lanka.
See also:
Geometry Problems
1281-1290
Visual Index
Open Problems
All Problems
Triangle
Isosceles Triangle
Triangle Area
Congruence
Angles