She can make 12 different combinations.
If she used three different colors for the keychain, there's still 4 other colors left.
4 x 3 = 12
Answer:
Rhombus,and pentagon
Step-by-step explanation:
a rhombus has only obtuse or acute angles same with the pentagon.
If the length is x+5, the width would be x(x+5)=36
