Answer:
m∠3 = 78
Explanation:
Okay, since a triangle has 3 sides, we only need to find the measure of m∠3.
A triangle is made up of 180 degrees, so we can make an equation with 180 as what the equation is equal to.
Since m∠1 = 70, and m∠2 = 32, we will add those together with a variable x,
70+32+x=180
70 plus 32 is 102.
102+x=180
To get 102 to the other side we need to do the opposite of addition, which is subtraction.
180-102=78
So the answer is 78.