2006-11-04 04:36:42 · 10 answers · asked by Jason The Great 6 in Education & Reference ➔ Homework Help
The sum of the three angles of a triangle is 2 right angles.So ,if one of its angle is one right angle,then the sum of the other two angles would be one right angle,which makes it impossible for another angle to be a eight angle.
2006-11-04 05:31:20 · answer #1 · answered by alpha 7 · 0⤊ 0⤋
A right angle is 90 degrees. Any triangles angle should total 180* degrees. If you had four, 90 degree angles, which total 360 then you have a square or a rectangle.
A Triangle may be for example 60* 90* 30* or 45* 65* 70* or 120* 50* 10* ect.
any combination that will add up to 180*
2006-11-04 13:09:24 · answer #2 · answered by wileyoop 1 · 1⤊ 1⤋
An angle in a triangle needs to be between 0 and 180. Not 0 or 180 itself. (including 0 and 180 would not result in a triangle as lines would cover themselves and make a 'different shape' called a line)
Also a triangle WILL have 3 angles that total 180.
If 2 of those are 90 there is nothing left for the 3rd.
There would be two parallel lines and a triangle can never have parallel lines.
That is your proof.
2006-11-04 12:51:32 · answer #3 · answered by Puppy Zwolle 7 · 1⤊ 1⤋
Others have shown you the standard proof (that two right angles add up to 180, and with a third angle the triangle would have more than 180 degrees), but that's only part of the story. ...
Actually, in non-Euclidean geometry, triangles can and do have (or even three) right angles. An example of this is spherical geometry, such as what happens on a globe. The lines of longitude and the equator intersect at right angles. If you trace two lines of longitude from the equator up to the North Pole, you'll have a spherical triangle with two right angles.
2006-11-06 21:00:55 · answer #4 · answered by dmb 5 · 0⤊ 1⤋
In practice: draw two right angles and try to make a triangle. Not possible.
In theory: the sum of a triangles interior angles is 180 degrees, since triangles have 3 interior angles the third angle would have to be zero. Not possible.
2006-11-04 12:39:25 · answer #5 · answered by Anonymous · 0⤊ 1⤋
I can tell you that a triangle's angles add up to 180 degrees. So if you had 2 right angles (both 90 degrees) there wouldn't be a third angle.
2006-11-04 12:39:21 · answer #6 · answered by reslstancelsfutlle 4 · 0⤊ 1⤋
a triangle has to add up to 180 degrees, a right angle it 90 degrees, and a triange has to have 3 angles.if it has 2 right angles then it cant have a third. Get that?
2006-11-04 12:39:46 · answer #7 · answered by Sean 2 · 0⤊ 1⤋
apart from those 180angles mentioned above, if u have 2 right angles then these two sides will be parallel, and parallel lines dont meet each other and therefore only 2 vertices will be present. so it wont be a triangle
2006-11-04 12:50:08 · answer #8 · answered by Tim 2 · 0⤊ 1⤋
Well, if it did, then it wouldn't have three sides, and it wouldn't be a closed shape if it did.
2006-11-04 12:39:37 · answer #9 · answered by ChaiTea 5 · 0⤊ 1⤋
~~~theres one on the right, and one on the left
2006-11-04 12:44:27 · answer #10 · answered by ~~Penny~~ 5 · 0⤊ 1⤋