Can an isosceles triangle be an equilateral triangle? A. Yes
B. Sometimes
C. No
D. None of the above

An equilateral triangle is a triangle that has sides that are all equal. Every equilateral triangle is also an isosceles triangle. So any two 2sides that are = have equaled opposite angles. ... Therefore, since all three sides of an equilateral triangle are equal that means all three angles are equal, too.

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.