It is a point where two lines meet or cross each other at a common endpoint. * 1 point ray line vertex It is a part of the line that has one endpoint and goes on infinitely in only one direction and cannot be measured. * 1 point ray angle line segment It is formed with two rays at a common endpoint and do not form a line and measured by degrees. * 1 point ray vertex angle It is an angle that measures 90 degrees and can be represented by a square corner. * 1 point right angle obtuse angle acute angle It is measured less than 90 degrees and smaller than right angle. * 1 point acute angle obtuse angle right angle It is measured more then 90 degrees but less than 180 degrees. * 1 point obtuse angle right angle acute angle What is used in measuring an angle? * 1 point tape measure ruler protractor​