Which of the following is a pair of vertical angles?
B
A
B
х
ООО
с
D
A. ZAXD and ZAXC
B. ZBXC and DXE
C. ZAXB and ZDXE
D. ZAXE and ZBXC

B. <BXC and <DXE

Step-by-step explanation:

Vertical pair of angels are two opposite vertical angles formed when two traight lines intersect each other. They are of equal measure.

From the diagram, <BXC is vertically opposite to <DXE. Therefore they are a pair of vertical angles.

sorry, i can't understand your question. will later if you describe more clearly!

: )

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b