The diagram shows two intersecting line to find the missing angle measures

b = 102

a = 78

c = 78

Pretty sure these are the right.

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation: