Junior High School Entrance Exam Math: Where to Square the Area Ratio of Similar Figures and Where Not To

Conclusion: In the 4-way division of a trapezoid, you only "square" in one place junior high school entrance exam geometry, there are problems that deal with the area ratio of similar figures. Many ...

For children who forget the formula for the area of a triangle: "Combine two identical triangles to make a quadrilateral" [Former elementary school teacher of 16 years]

My child forgets the formula "base × height ÷ 2" every time they encounter a math problem about the area of a triangle....It takes a lot of patience on our part when they don't retain it no matter how ...