Grades 7-8 Video Solutions 2025-2025_7-8

Video Transcription

Video Summary

The problem involves finding the value of X in a geometric arrangement involving rectangular pictures. Using the properties of angle sums, it shows that angles on a straight line sum to 180 degrees. By examining the angles around the pictures and using the rule that the angles in a quadrilateral sum to 360 degrees, the solution involves calculating unmarked angles and aligning them with known values. After determining all necessary angles, the calculation demonstrates that X plus the sum of three other angles equals 360, leading to the conclusion that X is 70 degrees. The answer is B, 70.

Keywords

geometric arrangement

rectangular pictures

angle sums

quadrilateral

calculation