| Definition | Answer |
| An unproven statement based on observations; a guess | |
| A one-dimensional array of points with definite endpoints | |
| A fancy geometry word for 'equal' | |
| Two or more angles that add to 90 degrees | |
| To cut into 2 equal parts | |
| Two angles that are across from each other in an intersection of 2 lines | |
| An angle measuring less than 90 degrees | |
| An angle measuring 180 degrees | |
| Two or more angles that add to 180 degrees | |
| Two angles that are adjacent and together form a straight angle | |