the walls of a room are representation of what basic element of geometry

Answer 1

The walls of a room represent the basic element of geometry called planes. Planes are two-dimensional surfaces that extend infinitely in all directions. In the case of a room, the walls form planes that enclose a three-dimensional space.

Answer 2

which of the following is the measure of an obtuse anle
a 40
b 100
c 90
d 180

Answer 3

The measure of an obtuse angle is greater than 90 degrees and less than 180 degrees. Therefore, the answer is (b) 100.