On a piece of paper, use a protractor to construct a triangle with angle measures of 50° and 70º.

What is the measure of the third angle?

The measure of the third angle is 60 degrees

Step-by-step explanation:

we know that

The sum of the interior angles in any triangle must be equal to 180 degrees

Let

x ----> the measure of the third angle

so

solve for x

therefore

The measure of the third angle is 60 degrees

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step-by-step explanation:

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column