Which regular polygon can completely tessellate a plane? a} a regular nonagon
b} an equilateral
c} a obtuse scalene triangle
d} a regular decagon​

chad should not have included the values (1, 2) and (3, 6) because that would mean he only had half a healing card.

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

the answer is 99.

i would say b) is your answer

sorry if im wrong

step-by-step explanation: