Answer:
20
Step-by-step explanation:
Answer:
67.5 - 67.5 - 45 °
Step-by-step explanation:
Sum of INTERIOR angles of a polygon
(n-2) * 180 <====<u>ya just have to remember/know this !</u>
n is the number of sides n = 8 in this case
(8-2)*180 = 1080 ° < === this is the SUM of the 8 interior angles
EACH interior angle is then 1080 / 8 = 135 °
you can see from the picture that each of the two outside angles of the green triangle are 1/2 of this = 67.5° each
so the triangle measurements are
67.5 - 67.5 - 45 ( they have to sum to 180 for triangle)
The answer is c. you just have to look at the red line. you can tell that it is solid so you know that y has to also be equal to the value. Then you can see that it is shaded above the line so that means y is greater than the value. Then since the line is on -1 the answer has to be c, y is greater than or equal to negative 1.
