LibGDX – Rotating sprites and still keep the positioning between them

I’ve been struggling with a problem regarding rotations and relative positions between sprites (in this case, the sprites are just lines) – a bit off-topic, but should i be using the ShapeRenderer class to do this, though?

Anyway, it might be quite simple but i can’t seem to figure it out properly. Heres a picture of the situation: https://gyazo.com/78988e07991fedc778eaeb70f8a04d8e

Now, after trying a bunch of different approaches, this piece of code is the one i’m testing right now:

` public class TestState extends AbstractGameState {

private static final String LINE = "lineEffect.png";

private Sprite[] sprites;

public TestState(GameStateManager gsm) {
    super(gsm);

    sprites = new Sprite[2];
    for (int i = 0; i < 2; i++) {
        sprites[i] = new Sprite(new Texture(LINE));
        // both lines starting at the same X and Y
        sprites[i].setPosition(20, 50);
        // both lines have the same size
        sprites[i].setSize(100, 2);
        // guess i might be messing up here
        sprites[i].setOrigin(sprites[i].getX(), sprites[i].getY());
    }

    // for testing purposes
    sprites[0].setRotation(-20);
    sprites[1].setRotation(45);
}

@Override
public void render(SpriteBatch batch) {
    batch.setProjectionMatrix(camera.combined);
    batch.begin();
    for (Sprite sprite : sprites)
        sprite.draw(batch);
    batch.end();
}`

Any help on this would be appreciated, thanks in advance.