AB is a tangent line. Find x.
B.
a. 20°
b. 16°
c. 40°
d. 5°

Once you know the height and width, multiply them to get the area of the square. To find the perimeter of the square, add all four sides together. To find the area of a triangle, multiply together two of the sides not the hypotenuse and then multiply that figure by 1/2.