Triangles have three sides that sum up to 180°.
You are given two sides, 80
° and 40
°, and need to solve for the third side.
First make an equation, then plug in the two given sides to any of the two variables.
A + B + C = 180
°
80° + 40
° + C = 180
°
Now solve for the remaining variable
C =
180
° - 40
°
- 80
° = 6
0
°
The third angle is 60
°
The third angle is 90 degrees so it is right angle triangle.
The third angle has to be 90 degrees so it would be a right angle triangle.
isoselles triangleImproved Answer:-The third angle has to be 90 degrees so it is a right angle triangle.
The third angle is (128 degrees) minus (the second angle).
The third angle is 34.5 degrees
If that's a triangle, the third angle is 90 degrees.
30 degrees
The third angle is 90 degrees so it is right angle triangle.
The sum of the measures of the angles of a triangle is 180 degrees. First, calculate the sum of the two known angles. Then subtract that result from 180. That difference is the measure of the third unknown angle. Given: One angle of a triangle is 15 degrees and the second angle of the triangle is 85 degrees. To find: We need to find the third angle of the triangle. Let the third angle of the triangle be x. We know that the sum of the angles in a triangle is 180 degrees. ==> 15 degrees + 85 degrees + x degrees = 180 degrees. ==> 100 degrees + x degrees = 180 degress. ==> x = 180 degrees - 100 degrees. ==> x = 80 degress. Therefore the third angle of the triangle is 80 degrees.
The third angle has to be 90 degrees so it would be a right angle triangle.
The third angle must be 30 degrees so it is an obtuse triangle
isoselles triangleImproved Answer:-The third angle has to be 90 degrees so it is a right angle triangle.
The third angle is (128 degrees) minus (the second angle).
The third angle is 34.5 degrees
If you mean an equilateral triangle then the 3rd angle is 60 degrees
The sum of the angles of a triangle is 180 degrees. So we have: 80 + 60 = 140 degrees, the sum of the two angles of the triangle 180 - 140 = 40 degrees, the measure of the third angle. Thus the measure of the third angle is 40 degrees.
A right angle triangle and the third angle measures 60 degrees