PLEASE HELP I DONT GET ANGLES AT ALL LOL

1: 133

2: 102

3: 80

4: 65

Step-by-step explanation:

for 1 and 2 the base is a strait line so you just subtract from 180. for 3 it's a square so the total of the angles add up to 360 so subtract 200 then divide by 2 and for 4, triangles' angles add up to 180.

2

step-by-step explanation:

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!