Grades 7-8 Video Solutions 2023-2023_7-8

Video Transcription

Video Summary

To solve the problem of dividing a right angle such that chosen pairs of lines can form angles of 10, 20, 30, 40, 50, 60, 70, and 80 degrees, Angelo needs to draw three additional lines. The initial right angle is divided first into 10 and 80 degrees, then further with a second line to add divisions of 70, 20, and 60 degrees. The final line, placed strategically down the center, creates angles that sum up to the remaining necessary values. Thus, the smallest number of additional lines needed is three.

Keywords

right angle

divide angles

additional lines

angle divisions

geometry problem