🟢Δ
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#delta symbol
#change symbol
#mathematics symbol
#science symbol
#green delta
#triangle letter
↔️‖
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#parallel lines
#parallel
#mathematics symbol
#vector norm
√9️⃣
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#square root
#radical symbol
#math operation
#root 9
#mathematics symbol
#delta symbol #change symbol #mathematics symbol #science symbol #green delta #triangle letter