If two angles of a triangle are added together to equal 135 degrees, what is the degree measure of the third angle?
2006-10-27 11:51:11 · 16 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
The three angles to to add to 180 degrees.
180 - 135 = 45
2006-10-27 11:52:12 · answer #1 · answered by MsMath 7 · 3⤊ 1⤋
Rule: The sum of all the angles in a triangle = 180 deegrees.
Your question said two of the angles added together
= 135 degrees...
So
180 - 135 = 45 Degrees is the size of the missing angle.
2006-10-27 11:57:58 · answer #2 · answered by zahbudar 6 · 0⤊ 0⤋
The angle sum property of a triangle states that the sum of the angles of a triangle is 180 degrees.
The sum of two angles is 135 degrees
Measure of third angle = 180 -135
= 45 degrees
The third angle measures 45 degrees
2006-10-27 22:58:10 · answer #3 · answered by Akilesh - Internet Undertaker 7 · 0⤊ 1⤋
Since the triangle needs to be 180 degrees, you need to do this:
180-135=45 degrees.
2006-10-27 12:05:41 · answer #4 · answered by Anonymous · 0⤊ 0⤋
180° - 135° = 45°
2006-10-27 11:53:51 · answer #5 · answered by Helmut 7 · 0⤊ 0⤋
180-135= 45 degrees
2006-10-27 11:52:32 · answer #6 · answered by Old Mad One 2 · 0⤊ 0⤋
Yes, all triangles are 180 no matter what kind or what size. So you would subtract the two angles you know to get the third one. 180-135=45
2006-10-27 11:52:13 · answer #7 · answered by akitashencp 2 · 1⤊ 0⤋
180-135=45
2006-10-27 11:52:50 · answer #8 · answered by sb13 2 · 0⤊ 0⤋
Total angle in triangle = 180
180 - 135 = 45 (that's the 3rd angle!!)
This is called sublementary angle ( I think, there is also complementary which I think is if two angles add up to 90 degrees)
For more info, go to AAAMath.com
Hope this helps! :) :) :)
2006-10-27 11:58:48 · answer #9 · answered by lemon drops 3 · 0⤊ 0⤋
45
2006-10-27 12:00:12 · answer #10 · answered by Eros_05 1 · 0⤊ 0⤋