The concept of 1 real number
The number of roots in the second quarter
Section 3 Real Number Operation
The fourth quarter, the power of the fractional index
Chapter XIII Intersecting Lines and Parallel Lines
Section 1 intersection line
Parallel lines in the second quarter
Chapter 14 Triangle
Related concepts and properties of 1 nodal triangle
Congruent triangles in the second quarter
Section 3 isosceles triangle
Chapter 15 Plane Cartesian Coordinate System
Section 65438 +0 Plane Cartesian Coordinate System
Motion of points in rectangular coordinate plane in the second quarter