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[prowl123]

Ok, I am stuck on this. We're just starting proofs in my geometry class and I have yet to learn my properties. The question asks:

If m<JUC = m<IUE then m<JUI = m<CUE. What property does the question depict?

I feel like a compete idiot for not knowing the answer to this... Help?

[Jelze Bunnycat]

Can you flip it? I don't think all of us can read in reverse.

I've only had algebra, but I have had proving statements. So as far as I can tell you have these:

JUC versus IUE and JUI versus CUE. Unless I'm mistaken, those denote the angles in the figure. So let's substitute a bit:

JUC = 1 + 2
IUE = 2 + 3

JUI = 1
CUE = 3

Since it asks a property, whatever that is, I'm assuming it's asking for an equation for angle 2, or IUC.

[prowl123]

Turns out it was the Angle Addition Postulate. Don't know how, since it was under the propeties section