12 cookies= 1 dozen.
12*4 (dozens) =48
48/ 4= 12
12 cookies is a 1/4 or 25% of the whole amount of cookies.
48- 12= 36
He brings 36 cookies to school.
Answer:

Step-by-step explanation:
The three numbers are 52, 53, 54.
52+53=105 105+54=159
Answer:
The figure is a Rhombus.
Step-by-step explanation:
Cause well it looks like a Diamond pretty much. Hope this helps.
Answer:
Yes
Step-by-step explanation:
Statement Reason
ab = bd Given
ac=cd Given
bc = cb definiton of reflex line
triangle abc is congruent to triangle dbc side side side postulate