minus angleの例文

例文

1. P is a point inside triangle ABC, and D and E are the incenters of triangles APB and APC, and angle APB minus angle ACB is equal to angle APC minus angle ABC . Show that lines AP, BD and CE meet at a point.
2. P is a point inside triangle ABC, and D and E are the incenters of triangles APB and APC, and angle APB minus angle ACB is equal to angle APC minus angle ABC . Show that lines AP, BD and CE meet at a point.