"Trapezoid" Quadrilateral PPT Courseware 2

Description

"Trapezoid" Quadrilateral PPT Courseware 2

Self-study insights:

Trapezoid definition: A quadrilateral in which one set of opposite sides is parallel and the other set of opposite sides is not parallel is called a trapezoid.

Trapezoidal ABCD, AD∥BC, AB=CD

Properties of isosceles trapezoid:

The two angles of an isosceles trapezoid on the same base are equal.

The diagonals of an isosceles trapezoid are equal.

An isosceles trapezoid is an axially symmetrical figure.

Theory verification

Two angles on the same base of an isosceles trapezoid are equal.

As shown in the figure, in the isosceles trapezoid ABCD, AD∥BC, AB=DC, explanation: ∠B=∠C, ∠A=∠D

Small scale chopper:

1. True or False Question: (rush to answer)

(1) A set of parallel quadrilaterals is a trapezoid ( )

(2) The two base angles of an isosceles trapezoid are equal. ( )

(3) The diagonals of an isosceles trapezoid are equal. ( )

2. The acute angle of an isosceles trapezoid is 60°, and the lengths of its two bases are 3cm and 8cm respectively. Then its waist length is ______.

Return the grains to the warehouse and summarize the harvest

1. Definition of trapezoid, right-angled trapezoid, and isosceles trapezoid

2 Properties of isosceles trapezoid

One set of opposite sides is parallel, the other set of opposite sides is not parallel but equal;

Angles Two interior angles on the same base are equal

Diagonals The two diagonals of an isosceles trapezoid are equal.

Symmetry: An isosceles trapezoid is an axially symmetrical figure. The straight line where the midpoints of the upper and lower bases are located is the axis of symmetry.

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For more information about the "Trapezoidal Quadrilateral" PPT courseware, please click on the Trapezoidal ppt Quadrilateral ppt tag.

"Ladder" PPT:

"Trapezoid" PPT Part 1 content: Definition A quadrilateral in which one set of opposite sides is parallel and the other set of opposite sides is not parallel is called a trapezoid. Find the shapes in the objects below. A quadrilateral with only one set of parallel sides is called a trapezoid. The two parallel sides are called the upper and lower sides of the trapezoid.

"Area of ​​Trapezoid" Area of ​​Polygon PPT Courseware:

"Trapezoid Area" PPT Courseware on the Area of ​​Polygons Teaching Objectives 1. Experience the process of group cooperation to explore the trapezoid area formula, communication and application. 2. Explore and master the area formula of a trapezoid, and be able to use the formula to calculate the area of ​​a trapezoid. 3. Get the pleasure of group cooperative learning..

"Area of ​​Trapezoid" Area of ​​Polygon Flash Animation Courseware 4:

"The Area of ​​a Trapezoid" The Area of ​​a Polygon Flash Animation Courseware 4 This courseware is a teaching material for the fifth unit of the fifth grade mathematics volume of the Hebei Education Edition The Area of ​​a Polygon The Area of ​​a Trapezoid Flash Animation Courseware The content is vivid and vivid, please download it! Keywords: Polygonal faces..

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Update Time: 2024-10-05

This template belongs to Mathematics courseware People's Education Press Eighth Grade Mathematics Volume 2 industry PPT template

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