True or false you can rely solely upon induction to prove that your conclusion is correct

Me find the measure to side a and the process to solve the problem you appreciate it : )

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane