1.
perimeter of a polygon
1st lecture perimeter
2nd lecture Perimeter of a regular polygon
Perimeter of a three-sided triangle
Perimeter of a quadrilateral
Perimeter of a figure consisting of five right angles
Perimeter of a figure made of regular polygons
Lesson 7 Evaluation

2.
Area of ​​a polygon
Area and units of the 8th quarter
Lesson 9: Relationships between Area Units
Lesson 10 Area of ​​a Rectangle
Lesson 11 Area of ​​a Parallelogram
Lesson 12 Area of ​​a Triangle
Lesson 13 Area of ​​a Trapezoid
Lesson 14 Area of ​​a Rhombus
Lesson 15: Area of ​​Polygons
Finding the area when the perimeter is known
Lesson 17: Shapes with the same height
Utilizing the height of a triangle in the 18th grade
Lesson 19: Area of ​​the Shaded Area? - Sum or Difference of Shapes
Lesson 20: Area of ​​the shaded area? _ Dividing the shape
Lesson 21 Area of ​​the shaded area? _Collect the parts
22nd round evaluation

3.
Circumference and area of ​​a circle
Lesson 23: Circle and Pi
24th lecture: Circumference of a circle
Lesson 25 Area of ​​a Circle
26th round, perimeter sense UP
Lesson 27: Perimeter of the shaded area?_Sum of curves
Lesson 28: Perimeter of the shaded area?_Sum of curves and lines
Lesson 29: Width Sense UP
Lesson 30: Area of ​​the shaded area? _ Sum or difference of shapes
Lesson 31: Area of ​​the Shaded Area? - Cutting and Moving
32. Perimeter of multiple circles
Lesson 33: Distance traveled by a circle, area
34th round evaluation

Answer and solution

"Miracle Lecture on Plane Figures: Memorizing Formulas", a one-volume study of the perimeter and area of ​​plane figures.

▶ Let's study elementary geometry 'logically'.
Starting in the third grade of elementary school, we begin to learn about the conventions, properties, and formulas of shapes, and begin to enter the world of shapes in earnest.
Don't just memorize, but study logically, expanding your thinking by providing valid reasons, such as "If A, then B."

▶ Let’s remember only three things: elementary geometry, promises, properties, and formulas.
Promises, tempers, and formulas often seem so obvious at first glance that we often just overlook them.
These bad habits prevent the foundation of logical thinking from being laid.
Let's study the promises, properties, and formulas in elementary geometry.
· A promise is something that has already been decided through mathematical terms or symbols.
First, memorize the pictures in the special lecture, and then memorize them in precise mathematical language.
· Character is something that can be seen through careful observation as it is a characteristic and rule that comes out according to a promise.
I remember it clearly based on mathematical logic, as explained by Teacher Miracle.
· A formal statement is a fact proven based on promises and properties expressed in letters or symbols.
Memorizing formulas blindly is a no-no! If you understand the process of deriving the formula, you'll memorize it naturally.

▶ Special lecture + review, let's learn solidly by first understanding the concepts and then applying them to problems.
With a one-day study session of special lectures and review, you can understand the concepts and principles through the vivid lectures of the miracle teacher in the special lectures, apply them with review problems, and solidify your skills to completely master them.