Which logo has 4 triangles aligned with two upside down?

What is another name for parallel evolution? 3.8 billion in number? Is a square a perimeter? What does the term oblate spheroid mean? Is a chestnut bigger than an acorn? When were Arabic numerals invented? How months are in four years? What comes next 2 4 6 12 14? What is the circumference of a circle if the radius is 3cm? What company has the most seven digit income? What is Critical Path Method? Is a door quadrilateral? What is 486 divisible by? Which is the largest out of these numbers 1.1 0.853 0.8 1.3 0.805 0.05? What is 21 millimetres in pixels? How many times can 7 go into 137? What is 888 in scientific notation? How do you write fifty-four thousandths in expand form? What are all negative things that could happen to settlers? What is two million two hundred thousand euro in us dollars?