1. there is a little p in the angle AB and BC. Now we need to find a point N and W on AB and BC, and make the perimeter of triangle PNW shortest by connecting PNW.

In 1 and right triangle ABC, angle C = 90, BD and AF are bisectors of two acute angles b and c, respectively, and they intersect at point G to find the degree of angle DGF.

2. Angle b = 37; Angle ACB =114; Angle aed = 40; Find the BDF corner

3, Angle A = 18, Angle B = 40, Angle C = 32, and find the degree of Angle D+ Angle E. ..

4.d is any point in the triangle ABC. Please explain why the angle BDC > > Angle A holds.

5. In triangle ABC, the angle ADB = 100 is called 4c = 80. Angle BAD= 1/2 Angle DAC, divided by angle ABC, find the degree of angle bed.