1933-36 1937-40 1931-33 1931-34
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Answer:
<em>The coordinates of b are: B=(-7,-8)</em>
Step-by-step explanation:
We are given the coordinates of the midpoint of as M=(-5,-2).
We are also given the coordinates of A=(-3,4). The question requires us to calculate the coordinates of the other endpoint B.
Let (xb,yb) the coordinates of B. The coordinates of the midpoint can be calculated as follows:
We know xa=-3 and xm=-5. Solve the first equation for xb:
Substituting:
We can solve the second equation for xb and get:
Since ya=4 and ym=-2, then:
Thus, the coordinates of b are: B=(-7,-8)
The formula to find the measure of an interior angle is 
, where 
represents the number of sides in the polygon. In this problem, would represent 
.
Let's plug in the value for
Let's simplify that.
Now we know that the <span>measure of an interior angle of a regular three-sided polygon is 60</span>°. Your answer would be B!
Let me know if you have any questions regarding this problem!
Thanks!
-TetraFish
Let's plug in the value for
Let's simplify that.
Now we know that the <span>measure of an interior angle of a regular three-sided polygon is 60</span>°. Your answer would be B!
Let me know if you have any questions regarding this problem!
Thanks!
-TetraFish
The equidistant point for all three, will be the "centroid" of their triangular locations
thus
thus