Biofuels and nuclear power may prove useful as ______. energies to bridge the time between fossil fuel depletion and new renewables. Whether using a food crop as a source of biofuels is environmentally sustainable would have to consider all of the following, EXCEPT _______. A) the impact on food supplies and prices. B) the amount of fertilizers used and their impact on aquatic ecosystems.
Other than the diagonal side of the right triangle, the other two sides make a perpendicular right angle triangle. Other than the diagonal side of the right triangle, the other two sides make a perpendicular right angle triangle. The right angle is 90 degrees.  The right angle is 90 degrees.
4 right angle triangles are forming in the diagram of same kind use phytagorus theorem ans=last option. Think of this polygon as 4 congruent right triangles. The sides of the polygon are the 4 hypotenuses of the 4 triangles. The 4 hypotenuses are congruent. If you find the length of one hypotenuse and multiply it by 4, you'll have the perimeter of the polygon.