2007-06-15 12:07:27 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
I believe only 1
2007-06-15 12:09:44 · answer #1 · answered by anzerkid 1 · 1⤊ 1⤋
In spherical geometry there can be 3 right angles in a triangle. Daniel B gave a good example of a triangle on the surface of the earth that has 3 right angles.
2007-06-15 19:28:53 · answer #2 · answered by TFV 5 · 0⤊ 0⤋
3
2007-06-15 19:09:32 · answer #3 · answered by Anonymous · 2⤊ 1⤋
3. On Earth, think of the Equator, the Prime Meridian and the meridian at 90 deg East (or West). They are all perpendicular on each other. The answer "1" is valid only in plane geometry. The difference between the sum of all interior angles and 180deg is called "spherical excess" and gives the area of the (spherical) triangle.
2007-06-15 19:17:22 · answer #4 · answered by Daniel B 3 · 1⤊ 0⤋
3
.
2007-06-15 19:09:50 · answer #5 · answered by tlbs101 7 · 1⤊ 1⤋
2, because like on the earth, the equater has two right angles coming off it, right? The latteral and longitude or what ever.
2007-06-15 19:12:41 · answer #6 · answered by Bohemian 3 · 0⤊ 2⤋
One is the only number that makes sense to me.
2007-06-15 19:15:36 · answer #7 · answered by katywithay2009 4 · 0⤊ 0⤋