Answer:
70*
Step-by-step explanation:
The platform is square. Let the length of one side be x.
Then the perimeter is P = 6x - 6 = 4x
Then 2x = 6 and x = 3. The side length is 3.
Check: P = 4(3) = 12
P = 6(3)-6 = 12
These agree.
Answer:
Right angle
Step-by-step explanation:
All right triangles have to have a 90 degree right angle. That's what makes it a right triangle.