GRE
Length of AB
Length of BC
AB
BC
The perimeter of the triangle
15
∠B
∠C
The perimeter of rectangular
The sum of the perimeter of two triangles
$$\frac{BD}{AB}$$
$$\frac{DC}{BC}$$
The area of triangle PQR
The area of triangle PSR
$$x+y$$
$$\sqrt{(x^2+y^2)}$$
The angle opposite to the longest side of the triangle
90°
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