If you have a right triangle and one angle in the triangle is 45 degrees, the other would have to be complementary (an angle that adds up to another to form a right angle) so the other angle would have to be 45 degrees to make that a right angle 90 degrees. So complementary angles are two angles that add up to equal 90 degrees.
I think it’s b because x when it’s alone is one i think
There'd be 6 EQUILATERAL triangles in a REGULAR hexagon
6 equals 6*10^0 which os 6*1=6
A parallelogram has 4 sides. there are different Parallelograms to know but what you asked was a Square. A square is a parallelogram that has all angles at 90° and Congruent to each other