class Trapezoid extends Quadrilaterals {
	private static int numOfTrapezoids = 0;
	private double firstBase, secondBase, firstSideLength1, secondSideLength1, height2;
	private int serialNumber;

	public Trapezoid() {
		firstBase = 1.0;
		secondBase = 1.0;
		firstSideLength1 = 1.0;
		secondSideLength1 = 1.0;
		height2 = 1.0;
		numOfTrapezoids++;
		serialNumber = numOfTrapezoids;
	}

	public Trapezoid(double firstBase, double secondBase, double firstSideLength1, double secondSideLength1, double height2) {
		this.firstBase = firstBase;
		this.secondBase = secondBase;
		this.firstSideLength1 = firstSideLength1;
		this.secondSideLength1 = secondSideLength1;
		this.height2 = height2;
	}

	public Trapezoid(boolean check) {
		if (check == true) {
			numOfTrapezoids++;
			serialNumber = numOfTrapezoids;
		}
	} //End of Trapezoid method

	public double getFirstBase() {
		return firstBase;
	} //End of getFirstBase method

	public double getSecondBase() {
		return secondBase;
	} //End of getSecondBase method

	public double getFirstSideLength1() {
		return firstSideLength1;
	} //End of getFirstSideLength1 method

	public double getSecondSideLength1() {
		return secondSideLength1;
	} //End of getSecondSideLength1 method

	public double getHeight2() {
		return height2;
	} //End of getHeight2 method

	public void setFirstBase(double firstBase) {
		this.firstBase = firstBase;
	} //End of setFirstBase method

	public void setSecondBase(double secondBase) {
		this.secondBase = secondBase;
	} //End of setSecondBase method

	public void setFirstSideLength1(double firstSideLength1) {
		this.firstSideLength1 = firstSideLength1;
	} //End of setFirstSideLength1 method

	public void setSecondSideLength1(double secondSideLength1) {
		this.secondSideLength1 = secondSideLength1;
	} //End of setSecondSideLength method

	public void setHeight2(double height2) {
		this.height2 = height2;
	} //End of setHeight2 method

	public int getSerialNumber() {
		return serialNumber;
	}

	public double findPerimeter() {
		return firstBase + secondBase + firstSideLength1 + secondSideLength1;
	} //End of findPerimeter method

	public double findArea() {
		return (firstBase + secondBase)/2 * height2;
	} //End of findArea method

	public static int getNumOfTrapezoids() {
		return numOfTrapezoids;
	} //End of getNumOfTrapezoids method

	public String toString() {
		return ("[Trapezoid " + serialNumber + "]\nFirst Base: " + getFirstBase() + "\nSecond Base: " + getSecondBase() + "\nFirst Side Length: " + getFirstSideLength1() + "\nSecond Side Length: " + getSecondSideLength1() + "\nHeight: " + getHeight2() + "\nThe area is " + findArea() + "\nThe perimeter is " + findPerimeter() + "\n");
	} //End of toString method

	public boolean equals(Object o) {
		if (o instanceof Trapezoid) {
			Trapezoid t = (Trapezoid)o;
			if (this.getSerialNumber() == t.getSerialNumber())
				return true;
		}
		return false;
	} //End of equals method
} //End of class Trapezoid