Construction of physical structures to protect coasts from erosive power of waves
It depends on what you're asking. If angle a and b are both on a straight line, b would equal 169 degrees because the total has to add up to 180 degrees, but if they are on a right angle, b would equal 79 because it has to add up to 90 degrees.
There is only one statement here that is not describing Islam accurately:
B. Caliphs were prophets of equal stature with Muhammad.
Caliphs are not prophets - they are leaders and successors of Muhammed, but not prophets.
The answes A, C and D are correct.
The Civil War was the most different and the US lacked support.
