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activity #3

Determine if the following description is an Undefined term, Defined term, Postulate, or
Theorem.
1. Angle ABC measures exactly 90°.
2. It has no thickness but has infinite length.
3. The intersection of a plane and a line is at a point.
4. Line h and line j intersect at a point.
5. The measure of angle D and angle E being added together is 180o