Regular polygons can be either concave of convex, as long as all angles are congruent and all sides are congruent.
a) true
b) false

When a polygon is both equilateral and equiangular it is called a regular polygon. So angles have to be equal and sides have to be equal...like a square..a square is a regular polygon. So ur answer is TRUE.

You can find the area of a rectangle by multiplying the length and height. so multiply 1/2*7/4(which is the simpler version of 1 3/4) and you get 7/8 as your answer.