Grades 11-12 Video Solutions 2025-2025_11-12

Video Transcription

Video Summary

In this math problem, a convex quadrilateral ABCD is divided into sections with diagonals intersecting at points M and N. Given specific triangle areas within the setup, the goal is to find the area of triangle BCN. The solution involves understanding the properties of these triangles and using height and base relationships with arithmetic sequences to balance equations. After calculating the differences between similar triangle areas, the solution determines the area of triangle BCN is 57, aligning with the multiple-choice answer A.

Keywords

convex quadrilateral

triangle area

diagonals intersection

arithmetic sequences

geometry problem