"Understanding Parallelograms" Triangle Parallelogram and Trapezoid PPT Courseware 2

Description

"Understanding Parallelograms" Triangle Parallelogram and Trapezoid PPT Courseware 2

(1) Activate old knowledge and introduce new lessons

1. Can you tell me where you can see parallelograms in your life?

Fences, retractable doors, picture frames, mirrors, tables…

2. Can you see the parallelogram from the life scenes and objects below?

Why do everyone draw different vertical line segments? But the measured distances are basically the same? How many vertical line segments can be drawn like this? What conclusion can you draw?

Because the vertical line segments drawn start from different points on a set of parallel lines, countless such line segments can be drawn and have equal lengths.

Draw a perpendicular line from a point on one side of the parallelogram to the opposite side. The line segment between this point and the vertical foot is called the height of the parallelogram.

The side on which the vertical foot is located is called the base of the parallelogram.

A parallelogram can have numerous height lines.

Consolidation exercises

Distinguish.

(1) A figure with two sets of opposite sides that are parallel is called a parallelogram. ( )

(2) Rectangles and squares are special parallelograms. ( )

(3) The two opposite sides of a parallelogram are parallel and equal. ( )

(4) A parallelogram has only two heights. ( )

(5) The heights of parallelograms are all equal. ( )

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For more information about the "Understanding Parallelograms, Triangles, Parallelograms and Trapezoides" PPT courseware, please click on the "Understanding Parallelograms PPT Triangles Parallelograms and Trapezoid PPT" tab.

"Understanding Parallelograms" PPT:

"Understanding Parallelograms" PPT Part One: Learning Objectives: Understand quadrilaterals and be able to identify parallelograms. Explore new knowledge, understanding of quadrilaterals... ... ... Understanding parallelograms PPT, part 2: detailed explanation of classic questions. A quadrilateral like the following...

"Understanding Parallelograms" Triangle Parallelogram and Trapezoid PPT Courseware:

"Understanding Parallelograms" Triangles, Parallelograms and Trapezoid PPT Courseware Judgment A quadrilateral with two sets of opposite sides that are parallel is a parallelogram. As long as the two opposite sides of a quadrilateral are parallel, it must be a parallelogram. Can you tell me about rectangle, square and...

"Understanding Parallelograms" Parallelograms and Trapezoid PPT courseware:

"Understanding Parallelograms" Parallelogram and Trapezoid PPT Courseware The vertical line segment from a point on one side of a parallelogram to the opposite side is the height of the parallelogram, and this opposite side is the base of the parallelogram. Determine whether the blue line segments below are the base and height of the parallelogram..

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Update Time: 2024-09-07

This template belongs to Mathematics courseware Jiangsu Education Edition Fourth Grade Mathematics Volume 2 industry PPT template

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