The most appropriate choice for equilateral triangle will be given by
Value of x = 
What is equilateral triangle?
A closed two dimensional figure with three sides and three angles is called triangle.
Based on sides of triangle, triangle can be classified as equilateral, isosceles and scalene
The triangle whose all sides and all angles are equal is called equilateral triangle. All the angles of equilateral triangle are 60°
Here,
Since the triangle is equilateral, angle of triangle is 60°
sin 60° = 
= 

To learn more about equilateral triangle, refer to the link:
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Answer:
First Blank: 4*2 = <em><u>8</u></em>
Second Blank: 6*2 = <em><u>12</u></em>
Step-by-step explanation:
The common ratio for the right row is the number thats given on the opposite side of it's left row times 2
Hope this helps!
Answer:
Step-by-step explanation:
One pair of coordinates is sufficient to work out the constant of proportionality.
<u>Equation in general form:</u>
and
<u>Substitute x- and y- coordinates into equation and find the value of k:</u>