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AMARILYIN
Answered

Find the missing angle.
72
Х
40°
[?]
x =
Enter the number that belongs in the green box.

Find The Missing Angle 72 Х 40 X Enter The Number That Belongs In The Green Box class=

Answer :

0090086IN

Answer:

x=68

Basic fact:

angles in a triangle add up to make 180 degrees

Step-by-step explanation:

we know that

72+40+x=180

112+x=180

-112

x=68

Answer:

X = [68]°

Step-by-step explanation:

We know that a triangle has 180 degrees in it from the total angle measure  formula:

    m = 180(n-2)

Where n equals the number of sides a shape has and m is equal to the sum of interior angle measures.

    m =  180(3-2)

         =  180(1)

         =  180

So if we know two  of the angle measures, we can add them then subtract that from the total angle measure to get x.

      180-(72+40) = 68

TL;DR -   Add the known angle measures and subtract them from the total angle measure to get the third missing angle.

Hope this helps :)

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