Help !! what is the m<|1

Step-by-step explanation:

The 3 interior angles of a triangle must add to 180 degrees.

We don't know the measure of angle 1. We can say the measure of angle 2 is 61° and the measure of angle 3 is 51°.

Add the numbers on the left side.

We want to isolate the measure of angle 1.

112 is being added, so we must perform the inverse operation of subtraction.

The measure of angle 1 is 68 degrees.

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

4 + 5 7/9= 9 7/9

step-by-step explanation: