Two angles of a triangle are 40 degrees and 62 degrees ; what is the third angle’s measure ?

The measure of the third angle = 78°

Step-by-step explanation:

∵ The sum of angles in any triangle = 180°

∵ The measures of two angles are 40° and 62°

∴ The measure of the third angle = 180 - (40 + 62) = 78°

78 degrees.

Step-by-step explanation:

By definition, the sum of the interior angles of a triangle is 180 degrees.

Then, keeping on mind that two angles of a triangle are 40 degrees and 62 degrees, you can calculate the third angle as following, where x is the missing angle:

Therefore, the third angle measures 78°.

incomplete question. how do you expect anyone to you when you do not post the question in its entirety?

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.