* About "parallel lines and the master of the corner"
This application is the application that can master parallel lines of the second grade at a junior high school and the unit of the corner smoothly.
* Characteristic
● You can use it to the person who wants to master the unit of "parallel lines and the corner" of the second grade at a junior high school textbook level.
● Because it is changed at random, I can practice the numerical value enough.
● I can practice every pattern progressively.
● Because the calculating formula is displayed on the way, I can easily confirm it where it is different.
* Contents
I find the size of 1 various corners
1. Vertically opposite angle • 2 supplement straight lines cross
2. Vertically opposite angle • 3 supplement straight lines cross
3. Alternate angles • Position relations of corresponding angles
4. Alternate angles • I demand corresponding angles
2. The triangular corner
1. I find an interior angle
2. I demand an exterior angle
3. Butterfly form
3. Parallel lines and corner
1. Stairs 1
2. Stairs 2
3. Stairs 3
4. The polygonal corner
1. Arrowhead
2. The sum of interior angle
3. The sum on the outside
4. Isosceles triangle
5. The issue of development
1. Lapel 1
2. Lapel 2
3. Problem 1 of the bisector
4. Problem 2 of the bisector