"Angles of the same position, internal angles, internal angles of the same side" PPT courseware 2

Description

"Angles of the same position, internal angles, internal angles of the same side" PPT courseware 2

learning target

1. Know the meaning of three lines and eight anises.

2. Understand the meaning of congruent angles, congruent angles, and congruent interior angles.

3. Be able to tell which two straight lines intersect two congruent angles, interior angles on the same side, and interior angles on the same side.

Review: 1. What are the two positional relationships between two straight lines on a plane? (parallel and intersecting)

2. How many angles do two straight lines intersect? (4)

3. What about two straight lines intersecting a third straight line? (8)

4. Can you find out which pairs of vertex angles there are among these 8 angles?

∠1 and ∠3, ∠2 and ∠4,

∠5 and ∠7, ∠6 and ∠8

5. Are there any other relationships between these corners?

observe

As shown in the picture: 1. How to describe the positional relationship of these three straight lines?

Two straight lines AB and CD are intercepted by a third straight line EF

2. How many angles are formed at the two intersection points? How are these angles related apart from being opposite the top angle?

Question: 1. Observe the positional relationship between ∠1 and ∠5

Isotopic angle:

① On the same side of straight line EF

②On the same side of straight lines AB and CD

Question: 2. Observe the positional relationship between ∠3 and ∠5

Internal wrong angle:

①Between straight lines AB and CD

②On both sides of straight line EF

Question 3: Observe the positional relationship between ∠4 and ∠5

Same side interior angle:

①Between straight lines AB and CD

② On the same side of straight line EF

Class exercises:

1. As shown in the figure,

(1) _______ and _______ are _______ formed by straight lines _____ and straight lines ____ being cut by straight lines ______.

(2) _______ and _______ are _______ formed by straight lines _____ and straight lines ____ being cut by straight lines ______.

Summary

1. This lesson studies the positional relationship between two angles at different vertices formed by two straight lines being intercepted by a third straight line, that is, concentric angles, interior angles, and interior angles on the same side.

2. Characteristics of concentric angles, interior angles, and interior angles on the same side:

Co-position angle: two straight lines in the same direction, the third straight line on the same side

Internal angle between two straight lines On both sides of a third straight line

Internal angles on the same side Between two straight lines The third straight line is on the same side

Keywords: Teaching courseware for internal angles with the same angles and internal angles with the same side, Qingdao version of seventh grade mathematics volume 2 PPT courseware download, download of seventh grade mathematics slide courseware, internal angles with the same angles with the same side PPT courseware download, .PPT format;

For more information about the PPT courseware "Angles with the same position, internal angles with the same angles, and internal angles with the same angles," please click on the "Angles with the same position, internal angles with the same position as the internal angles on the same side" ppt tag.

"Angles of the same position, internal angles, internal angles of the same side" PPT courseware:

Review of the PPT courseware "Angles of the same position, interior angles, interior angles on the same side": 1. What are the two positional relationships between two straight lines on a plane? (Parallel and intersecting) 2. How many angles do two straight lines intersect? (4) 3. What about two straight lines intersecting a third straight line? (8) 4.Can you find out...

"Angles of the same position, internal angles, internal angles on the same side" Intersecting lines and parallel lines PPT courseware 2:

"Angles of the same position, internal angles of the same angle, internal angles of the same side" Intersecting lines and parallel lines PPT courseware 2 Teaching objectives: 1. Observe the special positional relationship of the angles of three lines and octagons, and summarize the definitions of angles of the same position, internal angles of the same side, and internal angles of the same side. 2. According to the definition, isotopic angles and internal errors will be identified from the graphics..

"Angles of the same position, internal angles, internal angles on the same side" PPT courseware of intersecting lines and parallel lines:

"Angles of the same position, interior angles of the same side, interior angles of the same side" PPT courseware of intersecting lines and parallel lines. How many angles less than a straight angle are there cut by two straight lines AB and CD by a third straight line EF? Straight line EF----intersection straight line AB, CD----intercepted straight line One side is on the intersection line and in the same direction..

File Info

Update Time: 2024-10-13

This template belongs to Mathematics courseware Qingdao Edition Seventh Grade Mathematics Volume 2 industry PPT template

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