1. C
2. C
3. C
4. C
Triangle's formula:
[tex]\frac{1}{2}(h*b)[/tex] or [tex]\frac{h*b}{2}[/tex] where H is the height of the triangle and B is the base of the triangle (the bottom bit).
Trapezoid's formula:
[tex]\frac{1}{2}*(a+b)(h)[/tex] or [tex]\frac{a*b}{2}h[/tex] where A and B are the bases (top and bottom) and H is the height.
