Print out the worksheet and use a ruler and protractor to measure out the sides and angles of each shape. Then use what you learned about indicating congruence to show which shapes are congruent and which are not.

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?