area = 1/2 base x height
Triangles you use : (base x perpendicular height) divided by 2. Parallelogram: you need to find the area of one of the side triangles, then double it (because there's two of them). Then find the area of the square in the middle, and add this to the area of the two triangles.
Find the area of the square and two triangles that compose the rhomboid.
Divide the polygon into triangles. Calculate the areas of the triangles and then sum these.
the edges
Add the areas of the 4 triangles on the side of the pyramids As the 4 triangles are the same, just find the area of one of them and multiply by 4
A=1/2bh The area of a triangle is 1/2bh. If the base of it is a triangle and all 4 of the triangles aren't the same, then you have to find the area of the base triangle and then the three other triangles (which should all have the same area). If all four of the triangles have the same area, then just find the area of one of the triangles and multiply that by four. A triangular pyramid that has four equal triangles is also called a tetrahedron.
Find the areas of the rectangles and triangles. Add them together.
Break the area into squares, rectangles and triangles and add together.
Area = 0.5*base*perpendicular height
The surface area of a hexagon is the same as its area. You will normally need to split the hexagon into triangles, find their area and sum these.
For all triangles: area = 1/2 * base * height
You would need to divide it into triangles, find the area of each triangle and sum these areas together.