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MATH / Kite ABCD (a quadrilateral with two pairs of adjacent equal sides) has coordinates A (0,7), B (1,0), C (12,−2), and D (7,8). What is the area of ABCD, given that the area of a kite…
Problem
Answer published by the source. Consult the official source to check your work against its answer.
problem
Kite (a quadrilateral with two pairs of adjacent equal sides) has coordinates and What is the area of given that the area of a kite is equal to half the product of its diagonals?
[asy]
string sp(pair P, string P2){return "
$" + P2 + "\,(" + string(P.x) + "," + string(P.y) + ")$";}
size(150); defaultpen(fontsize(10)); draw((-5,0)--(15,0),Arrows(4)); draw((0,-5)--(0,10),Arrows(4)); pair A=(0,7),B=(1,0),C=(12,-2),D=(7,8); draw(A--B--C--D--cycle, linewidth(0.7)); draw(A--C, dashed); draw(B--D, dashed); label(sp(A,"A"),A,W); label(sp(B,"B"),B,S); label(sp(C,"C"),C,E); label(sp(D,"D"),D,N);
[/asy]Plain-text mathematical notation (without MathML)
Kite ABCD (a quadrilateral with two pairs of adjacent equal sides) has coordinates A (0,7), B (1,0), C (12,−2), and D (7,8). What is the area of ABCD, given that the area of a kite is equal to half the product of its diagonals?
[asy]
string sp(pair P, string P2){return "$" + P2 + "\,(" + string(P.x) + "," + string(P.y) + ")$";}
size(150); defaultpen(fontsize(10)); draw((-5,0)--(15,0),Arrows(4)); draw((0,-5)--(0,10),Arrows(4)); pair A=(0,7),B=(1,0),C=(12,-2),D=(7,8); draw(A--B--C--D--cycle, linewidth(0.7)); draw(A--C, dashed); draw(B--D, dashed); label(sp(A,"A"),A,W); label(sp(B,"B"),B,S); label(sp(C,"C"),C,E); label(sp(D,"D"),D,N);
[/asy]Original LaTeX notation
Kite $ABCD$ (a quadrilateral with two pairs of adjacent equal sides) has coordinates $A\ (0,7),\ B\ (1,0),\ C\ (12,-2),$ and $D\ (7,8).$ What is the area of $ABCD,$ given that the area of a kite is equal to half the product of its diagonals?
[asy]
string sp(pair P, string P2){return "$" + P2 + "\,(" + string(P.x) + "," + string(P.y) + ")$";}
size(150); defaultpen(fontsize(10)); draw((-5,0)--(15,0),Arrows(4)); draw((0,-5)--(0,10),Arrows(4)); pair A=(0,7),B=(1,0),C=(12,-2),D=(7,8); draw(A--B--C--D--cycle, linewidth(0.7)); draw(A--C, dashed); draw(B--D, dashed); label(sp(A,"A"),A,W); label(sp(B,"B"),B,S); label(sp(C,"C"),C,E); label(sp(D,"D"),D,N);
[/asy]level
Level 3
type
Algebra
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