Which diagram shows the most useful positioning and accurate labeling of a kite in the coordinate plane?




Answer: Second diagram and fourth diagram.
Step-by-step explanation:
A kite is a quadrilateral which has two pairs of congruent adjacent sides.
In diagram 1:
By the distance formula,
The sides of the given quadrilateral are [tex]\sqrt{a^2+c^2}[/tex], [tex]\sqrt{b^2+c^2}[/tex], [tex]\sqrt{b^2+d^2}[/tex] and [tex]\sqrt{a^2+d^2}[/tex]
Since, here a, b, c and d are unknown numbers,
Thus, this quadrilateral does not have any pair of congruent adjacent sides.
⇒ It is not a kite.
In diagram 2:
By the distance formula,
The sides of the given quadrilateral are [tex]a[/tex], [tex]a\sqrt{5}[/tex], [tex]a\sqrt{5}[/tex] and [tex]a[/tex]
Since, this quadrilateral has two pairs of congruent adjacent sides.
⇒ It is a kite.
In diagram 3:
By the distance formula,
The sides of the given quadrilateral are [tex]a[/tex], [tex]\sqrt{b^2+(c-a)^2}[/tex], [tex]\sqrt{(b-a)^2+c^2}[/tex] and [tex]a[/tex]
Since, here a, b, c and d are unknown numbers,
Thus, this quadrilateral only have only one pair of congruent adjacent sides.
⇒ It is not a kite.
In diagram 4:
By the distance formula,
The sides of the given quadrilateral are [tex]\sqrt{b^2+c^2}[/tex], [tex]\sqrt{b^2+c^2}[/tex], [tex]\sqrt{a^2+c^2}[/tex] and [tex]\sqrt{a^2+c^2}[/tex]
Since, this quadrilateral has two pairs of congruent adjacent sides.
⇒ It is a kite.