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# Coordinate Geometry

### Orthogonal plane

### The shortest line segment

### Area of a triangle

### Line equations

### Point and circle relation

### Line and circle relation

### Circle and circle relation

### Chord length

### Circle and lines

### Find line equation when line tangent to a circle

### Line intersects a circle

### Find line equation when line intersects a circle

### Find circle equation

### Circle tangent to a line

### Find analytical expression of a function from its graph

### Graph transformation

### Circle symmetry

### Trajectory of a moving point

Content includes: orthogonal plane, orthogonal plane examples, coordinate plane examples, find the shortest line segment, find area of the triangle, linear function, is a point inside a circle? is a point outside a circle? is a point or on a circle? is a line intersecting a circle? is a line tangent a circle? is a line separate a circle? are two circles intersecting to each other? are two circles tangent to each other? are two circles separate to each other? find the chord length, find the line equation, find line equation if it tangent to a circle and perpendicular to another line, find analytical expression of inverse function and line function, find analytical expression of a quadratic function.

Mathematics can be self-learning. By good understanding mathematics, you can successfully graduate from college. So, you need to set a goal and works for your future, make progress each day, and get confident about yourself. Do each example yourself will help deep understanding those concepts in these topics. Opportunity is always for those who are prepared.

The purpose of this website is to help students understand the topic of the mathematics talked in class. Help students improve the ability of self-studding. Hope students could listen carefully to the video and do the example your-self in order to find which concept to apply to solve this kind of problem, and review them later. Hope students could spend time on most important things such as, reading, writing, mathematics and science.

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