Every square is also a

•Rectangle
•Rhombus
•parallelogram
•All of the above

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !