Which property is shown?
If m ZABC = m ZCBD, then mZCBD = m ZABC

symmetric property is shown here

Solution

The symmetric property states that if

two things are equal, we can "flip" them

around the equals sign. Algebraically,

this is written as

If a=b, then b-a.

This is true of our angles as well;

therefore this is the symmetric property.

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