Two angles of a triangle measure 15 ° and 85 ° . What is the measure for the third angle?
2006-12-07 17:00:15 · 7 answers · asked by dfsd s 1 in Science & Mathematics ➔ Chemistry
15 + 85 = 100, the angles in a triangle add up to 180, so the third angle is 80 not a right angle.
2006-12-07 17:02:43 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The sum of the interior angles of a triangle is 180 degrees. A triangle has 3 vetices, 3 sides, therefore it has 3 angles. Now you are given 2 of the 3 angles, so add them two together and substract it from 180 to get your third angle.
Hope that helps =]
2006-12-11 08:14:08 · answer #2 · answered by huggable 2 · 0⤊ 0⤋
Sum of all the angles of a triangle is equal to 180 degrees.
According to this,
15 deg + 85 deg + unknown angle = 180 degrees...
Hence, unknown angle, x = 180-(15+85)
=> x = 80 degrees.
2006-12-07 17:05:21 · answer #3 · answered by Praful M Nimbargi 2 · 0⤊ 0⤋
as all the angles of a triangle always add up to 180,
answer= 180-(15+85)
= 180-100
= 80
SIMPLE!
2006-12-08 23:29:16 · answer #4 · answered by puzzled 2 · 0⤊ 0⤋
80 degree
as by triagle law
1st angle + 2nd angle + 3rd angle = 180
2006-12-07 17:03:03 · answer #5 · answered by usman 3 · 0⤊ 0⤋
80
15+85+x = 180
100+x = 180
x = 180-100
x = 80
2006-12-07 17:58:39 · answer #6 · answered by wil_stylz 2 · 0⤊ 0⤋
How can a triangle be a square????
2006-12-07 17:32:59 · answer #7 · answered by checkmate 6 · 0⤊ 0⤋