What is the trapezoidal area formula? What is the area formula for a trapezoid?

The formula for the area of the trapezoid: (top bottom + bottom bottom) height 2, represented by letters: s=(a+c) h 2.

Deformation: h=2s (a+c); Deformation 2: a=2s h-c; Deformation 3: c = 2s h-a.

In the formula, a and c are the upper and lower bottom of the trapezoid, h is the height of the trapezoid, and s is the area of the trapezoid.

Popularly expressed as: (top bottom + bottom bottom) High 2

Trapezoidal area formula.

1. The area formula of the trapezoid: (upper bottom + lower bottom) High 2 The area of the trapezoid is equal to half of the product of the sum of the upper and lower bases and the height. If the upper and lower bases of the trapezoid are represented by a and b respectively, and the height is represented by h, the area of the trapezoid is s=(a+b) h2.

2. The area formula of the trapezoid: the median line is high.

According to the length of the median line of the trapezoid, which is equal to half of the sum of the upper and lower bases, the area of the trapezoid is also equal to the product of the median line and the height. If the median line of the trapezoid is denoted by m and the height is denoted by h, the area of the trapezoid is s=mh.

3. The trapezoidal area perpendicular to each other is: diagonal diagonal 2.

The trapezoidal formula is my own **. As follows.

Bottom Bottom Top bottom) * high 2 + (top bottom * high).

Example. However, if the upper bottom is larger than the lower bottom, the upper bottom should be subtracted, and the lower bottom should be multiplied by the height.

The trapezoidal bottom is 14 cm, the upper bottom is 8 cm, and the height is 10 cm. The area is as follows.

14 8) * 10 2 + (8 * 10) = 110 square centimeters.

Whereas the book formula is calculated as follows.

14+8)*10 2=110 square centimeters to prove feasible.

Prompt. The bottom is smaller than the bottom bottom, and the bottom is exchanged for the bottom minus the bottom

That is, the sum of the upper bottom + lower bottom and high 2 is represented by letters: s=(a+b) h 2

1. The area of the trapezoidal upper bottom and lower bottom of the high fiber hall Zheng 2, that is, s 1 2 a b h.

2. The area formula of the trapezoid = the median line is high, that is, l·h.

3. When the diagonal lines of the trapezoidal are perpendicular to each other: the area of the trapezoidal ode = diagonal 2, that is, 1 2*l*l.

A is the upper bottom, B is the lower bottom, the height is H, the median line is L, and the diagonal line is L.

<>trapezoid: Obtained from the parallelogram area. Two identical trapezoids can be put together into a parallelogram, the bottom of the parallelogram is the upper bottom + lower bottom of the trapezoid, and the height of the parallelogram is the height of the trapezoid, because the area of the parallelogram is the bottom * height, so the area of the trapezoid is (upper bottom + lower bottom) * height 2.

1. The trapezoidal area formula is: s=(a+c) h 2 Formula description: In the formula, a and c are the upper and lower bottom of the trapezoid, h is the height of the trapezoid, and s is the area of the trapezoid.

Deformation: h=2s (a+c); Deformation 2: a=2s h-c; Deformation 3: c = 2s h-a.

2. The area formula of the trapezoid: the median line is high, which is represented by letters: l h.

3. The trapezoidal area perpendicular to each other is: diagonal diagonal 2.

There are 2 types of trapezoidal area formulas.

1) (Top + Bottom)* High 2

2) Bottom * High - Top - Bottom) 2

There are two formulas for the area of a trapezoid.

1. With celebration s=(a+b)xh 2

2. Imitation resistance S=MH

where s represents the area of the trapezoidal dumb mu, a and b represent the upper and lower bottom of the trapezoid, h represents the height of the trapezoid, and m represents the median line of the trapezoid).

In mathematics, the formula is usually a very important part, remembering the formula can be very convenient to solve the problem, greatly reducing the workload and working time, a formula can solve a class of problems, so, what is the area formula of the trapezoid?

The formula for the area of the trapezoid: (upper bottom + lower bottom) high 2, represented by letters: s=(a+b) h 2

Deformation 1: h=2s (a+b); Deformation 2: a=2s h-b; Deformation 3: b = 2s h-a.

Another formula for calculating the area of a trapezoid: median line height, represented by letters: l·h.

The area of the trapezoidal where the diagonals are perpendicular to each other is: diagonal diagonal 2.

Alphabetical formula: (a+b) multiply h by 2

Trapezoidal formula. Upper bottom + lower bottom) high 2, represented by letters: s=(a+b) h 2

A trapezoid is a set of quadrilaterals in which one set of opposite sides is parallel and the other set of opposite sides is not parallel.

The two parallel sides are called the bottom edge of the trapezoid, of which the long side is called the lower bottom, and the short side is called the upper bottom; It can also be simply thought that the top one is called the bottom and the bottom one is called the bottom bottom. The two sides that are not parallel are called the waist; The perpendicular segment sandwiched between the two bases is called trapezoidal height.

A trapezoid with a waist perpendicular to the bottom is called a right-angled trapezoid. The trapezoidal shape with equal waists is called isosceles trapezoid, and isosceles trapezoidal is a special trapezoid, and its judgment method is similar to that of isosceles triangle.

Nature

The upper and lower bases of the trapezoid are parallel;

The trapezoidal median line (the line connecting the midpoints of the two waists is called the median line) is parallel to the two bases and is equal to half of the sum of the upper and lower bases.

Judgment

A group of quadrilaterals where the opposite sides are parallel and the other is not parallel to the opposite sides is a trapezoid.

A group of quadrilaterals with parallel and unequal opposite sides is trapezoidal.

The area formula of the trapezoid: if the length of the upper bottom of the trapezoid is a, the length of the lower bottom is b, the height is h, and the area is s, then the area formula of the trapezoid is s= (a+b)*h, and the popular expression is: (upper bottom + lower bottom) high 2.

If the median length of the trapezoid is known to be l, the trapezoidal area formula is l*h.

A trapezoid is a quadrilateral with only one set of opposite sides parallel. The two parallel sides are called the bottom edge of the trapezoid: the longer bottom edge is called the lower bottom, and the shorter bottom edge is called the upper bottom; The other two sides are called the waist; The perpendicular segment sandwiched between the two bases is called trapezoidal height.

A trapezoid with a waist perpendicular to the bottom is called a right-angled trapezoid. A trapezoid with two equal waists is called an isosceles trapezoid.