Jazzy's Geometry Reflection
作者：Lynne Crowe
1. To find a missing angle in a pentagon you add the numbers you all ready know, which equals 140+140+110+100+__= 540'. Then after adding those numbers say 540-490= 50
2. A square has 2 triangles and a pentagon has 3.
3. A heptagon has 5 triangles and adds up to 900'.
4. I learned about co-ordinates, how to write them and what they are. When writing them you write the number that goes across then the number going up or down.
5. The total amount of angles in a triangle equals 180'altogether.
5.1. But regular squares equal 360' altogether.
6. How to draw a equilateral triangle with a compass and protractor. With the angles all 60' each.
7. A octagon has 1080', and a decagon has 1440'.
