Question

Two Angles of a triangle are 30 degrees and 80 degrees.Find the third angle answer​

Answer 1

Answer:

Look

Step-by-step explanation:

Answer. Let the third angle be x. 80+30+x=180 degrees. Because we know that sum of all angles in a triangle is 180.01

Background:

We learned (or taught) that the three angles of a triangle add up to 180.

You ask for the measure of the third angle of a triangle whose other two angles are 30° and 80°.

Process:

The solution is found by subtacting the two known angles from 180. What remains is the third angle.

Solution:

180 - (30 + 80)=

180 -110 = 70.

70°

Answer 2

Answer:

70

Step-by-step explanation:

total length of a triangle is 180

length of one angle is 30

length of second angle is 80

length of third angle is a+b+c = 180

$30 + 80 + c = 180$

$c = 180 - 110$

c=70

hence third angle is 70