I found the key to the worksheet: https://tinyurl.com/y8a3amom.
copy and paste.
It would be 66 because the total angle of a triangle is 180 degrees and if you subtract 24,54,36 from 180 you will be left with 66 which is ur answer
Answer:
If I am correct the perimeter is 24
Step-by-step explanation:
Count how many are on the top which is 9. 2 sides are the same so 9+9=18. (OUR FIRST PART) Now the sides are 5 but WE ALREADY COUNTED 2 ON EACH SIDE SO THAT IS 3=3=6. Now add. 18+6= 24