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Graphic 2d: differentiating between objects

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I try to use graphic2d to make objects .  How can we differentiate the variable between 2 object that we created. For example the below code;

from above code,i have 2 rectangle variable , which is r1 and r2, and i can differentiate between them and i can do
"if (r1.intersects(r2))" in the actionPerformed method.

So my question is;

how about below code when using Graphic2d, how can i differentiate between these 2 triangle,
so that it can fit into "if (r1.intersects(r2))", as only one variable "lukis" only exist and it is used to make 2 triangle.

How can i make it so that it can fit into(......intersects(.....) ), meaning what variable should i put into these 2 dots area?

Thank you.
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Create two java.awt.Polygon objects (you already have all the data structures you need for that), and then use the Graphics.drawPolygon(Polygon) method to draw them.
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Quit cross posting:

You were given the same answer yesterday.

Its frustrating when we take the time to help and you completely ignore the advice given.

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