In World History I learned about religion and the history of stained glass. The history of stained glass stems from Pliny's tale. The story goes that a group of shipwrecked sailors was cooking natron. When they left it overnight it melted with the sand on the beach. This substance created glass. Silver stains, which were often applied to the side of the window that faced the outside, give stained glass its name. The silver stain turns a yellow color in a glass furnace that ranges from lemon to gold.

In Geometry, I learned about the properties of parallelograms and used the properties to design a piece of stained glass. The inspiration for my stained glass was really just going with the flow and doing what made the shapes fit in best. The shapes I included in my design were trapezoids, triangles, rhombus, rectangles, squares, and parallelograms. I made sure that my parallelograms abided by the properties of parallelograms which are opposite sides are parallel, opposite sides are congruent, opposite angles are congruent, consecutive angles are supplementary, diagonals bisect each other.

In this project, we were prompted to work on sector area and arc length by using real-life objects. Such as cookies or tortillas. We were asked to find the circumference of the cookie by wrapping a string around the cook and measuring that length. Once we took the circumference we worked on getting the diameter by putting the string across the cookie and measuring that. After finding the important information you had to cut the cookie into 4 uneven parts. With those 4 uneven parts, you need to find the angle measurement by using a protractor. Using the angle measurements you found, you would use this to find the sector area and arc length. Sector area is the area of the inside of the angle. To find sector area, you take pi times your radius squared times your angle measurement over 360. Arc length is the length of the outside of the angle. To find arc length, you take 2 times pi times your radius times your angle measurement over 360. You should notice that the area of all the parts should be equal to the beginning area. Since we were working on a cookie that is unequal the arc length didn't add to equal the circumference.