A pupil measured the angles in a tringle.
she said:
The angles are 30 degrees, 60 degrees and 100 degreees
Could she be right ?
YES or NO
Explain your answer.
2007-11-14 04:30:37 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
If the triangle is in a flat plain the answer is no as all triangles on a flat plain add uo tp 180 degrees.
If the triancle is drawn on a sphere or curved plain the sum of the angles are always greater than 180 degrees.
A lot of people do not understand this but try it by drawing a triangle on a football and measuring the angles.
2007-11-14 04:35:28 · answer #1 · answered by ORC 3 · 0⤊ 0⤋
As usual it depends - on what you mean by a triangle. If your definition restricts the sides of the triangle to being straight lines in 2-dimensional Euclidean geometry (as is usual) then she cannot be right. They must add up to 180 degrees.
However, if you include other sorts of geometries and define the sides to be the locus of points forming the shortest route between the three corners, then the sides of the triangle may not add up to 180 degrees and she could be right.
A 2-D space defined on the surface of a sphere is non-Euclidean and the angles of triangles drawn in that space add up to more than 180 degrees.
2007-11-14 14:05:56 · answer #2 · answered by greenshootuk 6 · 1⤊ 0⤋
when u add the 3 angles, they sum upto
30+60+100=190
the sum of angles of a triangle is only 180,so she cannot be correct
2007-11-14 12:34:48 · answer #3 · answered by Siva 5 · 0⤊ 0⤋
No, because all angles in a triangle always add up to 180 degrees. In this case, it adds up to 190 degrees!
2007-11-14 12:33:21 · answer #4 · answered by SKA 5 · 1⤊ 0⤋
NO. because angles in a triangle add up to 180 degrees. also no triangles angles can go up to 100 degrees unless it is a scalene.
2007-11-14 12:39:17 · answer #5 · answered by scorpioe3 2 · 0⤊ 0⤋
No. angles always add up to 180 degrees.
2007-11-14 12:35:04 · answer #6 · answered by ironduke8159 7 · 0⤊ 0⤋
No, angles in a triangle add up to 180.
2007-11-14 12:32:39 · answer #7 · answered by Nansy 4 · 2⤊ 0⤋
No. the sum of the internal angels in all triangles is 180, but the sum of angles you said got 190. so, it is not correct
2007-11-14 12:39:22 · answer #8 · answered by nahid m 1 · 0⤊ 0⤋
what is a 'tringle'?
2007-11-14 13:51:21 · answer #9 · answered by Anonymous · 0⤊ 0⤋
no they don't total 180degrees
2007-11-14 12:40:54 · answer #10 · answered by pl_welch 2 · 0⤊ 0⤋