Question

Help??? 2 questions attached below. Will fan and give medal?

Answer 1

I think 1 is A and 2 D

Answer 2

a dihedral angle is an angle between two planes (here two rectangles)

Answer 3

@NightmareNight The minimal number of faces of a polyhedral angle is 3

Answer 4

A polyhedral angle is formed by three or more faces of the polyhedron and have a common vertex.

Answer 5

note that the next question gives away the answer, (look at the wording)

Answer 6

Ohhhh 1 is B

Answer 7

yup

Answer 8

this website has some definitions (but im not crazy about its definition of dihedral angle)
http://www.ditutor.com/solid_gometry/polyhedra.html

Answer 9

Thank you, is number 2 right? @perl

Answer 10

yes