The second angle of a triangle is two times as large as the first. The third angle is 10 degrees more then the second angle. Find the mesurement of the first angle?
2006-07-31 06:47:08 · 4 answers · asked by peaches 1 in Education & Reference ➔ Homework Help
The angles have to add up to 180 degrees.
First: X degrees
Second: 2*X degrees
Third: 2X+10
So -- X + 2X+ (2X+10) = 180
5X +10 = 180
5X = 180 - 10 = 170
X = 170/5 = 34
2006-07-31 06:53:34 · answer #1 · answered by Ranto 7 · 9⤊ 1⤋
the first is 34 , the second 68 and te third 78 which the sum of the 3 angles equals 180 degrees
2006-07-31 06:52:52 · answer #2 · answered by marcos m 2 · 0⤊ 0⤋
Bravo - answers are correct , I also got 34 degrees for the first angle using the same methods.
2006-07-31 07:07:22 · answer #3 · answered by MollyMAM 6 · 0⤊ 0⤋
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2016-12-10 18:54:13 · answer #4 · answered by ? 4 · 0⤊ 0⤋