The three correct methods of relative aging of rocks are:
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Original Horizontality - This principle states that layers of sediment are originally deposited horizontally under the action of gravity.
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Cross-Cutting Relationships - This principle holds that if a geological feature cuts through another feature, the one that has been cut is older.
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Superposition - In an undeformed sequence of sedimentary rocks, the oldest layers are at the bottom and the youngest are at the top.
The other options listed (angular relationships, radiometric dating, and original angularity) are not primary methods used for relative dating. Radiometric dating, in particular, is a method of absolute dating.