(1) What is proportion?

Two expressions with equal ratios are called proportions.

(2) What is the proportional term?

The four numbers that make up a proportion are called proportional terms.

(3) What is a disproportionate term?

The two terms at both ends are called disproportionate terms.

(4) What is the proportional term?

The middle two terms are called proportional terms.

(5) What is the basic nature of proportion?

In proportion, the product of two external terms is equal to the product of two internal terms.

(6) What is the solution ratio?

The unknown term in finding the proportion is called the solution ratio.

(7) What is the direct proportional relationship?

Two related quantities, one variable and the other variable. If the ratio (that is, quotient) of the corresponding two numbers in these two quantities is certain, these two quantities are called proportional quantities, and the relationship between them is called proportional relationship.

(8) What is the inverse relationship?

Two related quantities, one variable and the other variable. If the corresponding product of these two quantities is certain, these two quantities are called inverse proportional quantities, and their relationship is inversely proportional.

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(1) What is the bottom surface of a cylinder?

The upper and lower surfaces of a cylinder are called the bottom surface of the cylinder.

(2) What is the side of a cylinder?

The surface of a cylinder is called the side of the cylinder.

(3) What is the height of the cylinder?

The distance between the two bottom surfaces of a cylinder is called the height of the cylinder.

Length measurement unit and rate: kilometers (kilometers), meters, decimeters, centimeters and millimeters.

1 km = 1 km? 1 km =1000m

1 m = 10 decimeter? 1 decimeter = 10/0cm

1 cm = 10/0mm