kiwibirb
Answered

Two angles of a triangle measure 12° and 40°.
What is the measure of the third angle of the triangle?

Answer :

Answer:

128

Step-by-step explanation:

The sum of angles in the triangle is 180 degrees

12 + 40 + x = 180

52 + x = 180

x= 180 - 52 = 128 degrees

(x is the third angle of the triangle)

abidemiokin

The measure of the third angle of the triangle is 128degrees

The sum of an interior angle of a triangle is 180 degrees.

Let the third angle of the triangle be x, hence;

12 + 40 + x = 180

52 + x = 180

Subtract 52 from both sides

52 + x - 52 = 180 - 52

x = 180- 52

x = 128degrees

Hence the measure of the third angle of the triangle is 128degrees

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