"Similar Polygons" similar PPT courseware of graphics 3

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"Similar Polygons" similar PPT courseware of graphics 3

in conclusion:

Hexagon ABCDEF and hexagon A1B1C1D1E1F1 are figures with the same shape;

Their six angles are all equal and are called corresponding angles;

The ratios of the six sides are all equal and are called corresponding sides.

Example: Each of the following sets of figures has the same shape. What is the relationship between their corresponding angles? What about the corresponding side?

(1) Equilateral triangle ABC and equilateral triangle DEF;

Solution: (1) Since each angle of an equilateral triangle is equal to 600, ∠A=∠D= 600, ∠B=∠E= 600, ∠C=∠F= 600;

Since all three sides of an equilateral triangle are equal, so

(2) Square ABCD and square EFGH.

Solution: (2) Since each angle of the square is a right angle, ∠A=∠E= 900, ∠B=∠F= 900, ∠C=∠G= 900, ∠D=∠H= 900;

What is the relationship between the corresponding angles of figures with the same shape? What about the corresponding side?

summary

Two polygons whose angles are equal and whose sides are proportional are called similar polygons

The ratio of corresponding sides of similar polygons is called the similarity ratio

The similarity ratio is related to the order of the narrative.

Corresponding angles of similar polygons are equal and corresponding sides are proportional.

If two polygons are dissimilar, then their angles may be equal and their sides may be proportional.

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For more information about the "Similarity of Similar Polygonal Figures" PPT courseware, please click the Similarity ppt tag of similar polygonal ppt figures.

"Positional similarity of similar polygons and figures" PPT courseware 2:

"Positional Similarity of Similar Polygons and Figures" PPT Courseware 2 1. If two ________ polygons ____________________ intersect at one point, we call the two figures similar figures. The intersection point is called ________, and the similarity ratio at this time is also called __..

"Positional Similarity of Similar Polygons and Figures" PPT courseware:

"Positional Similarity of Similar Polygons and Figures" PPT courseware 1. Two polygons with corresponding angles ________ and corresponding sides ________ are called ________. 2. The ratio of the perimeters of two similar polygons is equal to their __________; the ratio of the areas of similar polygons is equal to their _..

"Similar Polygons" PPT courseware:

"Similar Polygons" PPT courseware A=150 AB=6.5mm A'=150 A'B'=13mm B=120 BC=5.5mm B'=150 B'C'=11mm C=105 CD=6mm C'=105 C'D'=12mm D=135 DE=5mm D'=135 D'E'=10mm E=120 EF=7.5mm E'=120 E'..

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Update Time: 2024-10-20

This template belongs to Mathematics courseware Beijing Normal University Ninth Grade First Volume Mathematics industry PPT template

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