Total number of triangle is 632
With 3 diagonal endpoints are 56
Answer:
IK
Step-by-step explanation:
If you draw out the triangles it is easier to see
Answer:
She started with 200 stamps
Step-by-step explanation:
Answer:

Step-by-step explanation:
The missing details in the question are:


Required
The perimeter
This is calculated as:

So, we have:

Open bracket

Rewrite as:

The distributive property is 15+45 = (10 + 40) + (5+5) = 50 + 10 = 60
Hope this helps you.