Answer: When a transversal cuts (or intersects) parallel lines several pairs of congruent and supplementary angles are formed. There are 3 types of angles that are congruent: Alternate Interior, Alternate Exterior and Corresponding Angles. Some people find it helpful to use the 'Z test ' for alternate interior angles. If you can draw a Z or a 'backwards z', then the alternate interior angles are the ones that are in the corners of the Z.
Recover A Deleted Worksheet Sheet Tab in Excel. You probably have discovered that when you (accidentally) delete a sheet there is no Undo option to bring it back. One solution is to close your workbook without saving the changes and then reopen it in its original state.
1: Let Excel try. If Excel's automatic recovery mode fails, there's a manual feature for recovering a corrupted workbook: 1  Choose Open from the File menu. 2  In Excel 2007, click the Office button and select Open. 3  Using the Look In control, locate and specify the corrupted workbook.