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

Description

"Angles of the same position, interior angles, interior angles on 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 lines AB, CD----intercepted straight lines

One side is on the section line and in the same direction, and the other side is at two corners on the same side of the section line.

The parallel angles are on the left side of the intercept line and below the intercept line.

One side is on the section line and opposite, and the other side is at the two corners on both sides of the section line.

Internal staggered angles are sandwiched between two intercepted straight lines, on both sides of the intercepted line (staggered)

One side is on the section line and opposite, and the other side is at the two corners on the same side of the section line.

Interior angles on the same side are on the same side as the transversal lines, sandwiched between the two intercepted straight lines

Give it a try:

Ask the students to use the thumbs and index fingers of both hands to form an angle, with the two index fingers facing each other in a line, keeping them in the same plane, and try them separately to see what angles they can form.

Cooperative learning

As shown in the picture: The torso and thumb of two hands are in the same plane. What kind of angle can be regarded as a pair of angles formed by them? Similarly, can you also use the fingers of two hands to form homotopic angles and homoparametric angles?

Give it a try:

(1) If the picture is regarded as a straight line AB, and EF is intercepted by the straight line CD, then what kind of angles are ∠1 and ∠2? (same angle)

What about ∠3 and ∠4? (Internal angle) What about ∠ 2 and ∠ 4? (same as inner corner)

(2) If the figure is regarded as a straight line CD, and EF is intercepted by the straight line AB, then what kind of angles are ∠1 and ∠5? (same as inner corner)

What about ∠4 and ∠5? (internal wrong angle)

(3) Which two straight lines are intercepted by which straight line? Are ∠2 and ∠5 the same angles?

(Line lines AB and CD are intercepted by straight line EF)

Keywords: teaching courseware of intersecting lines and parallel lines, teaching courseware of congruent angles, interior angles of the same position and angles on the same side, PPT courseware of the second volume of seventh grade mathematics of the New People’s Education Edition, download of seventh grade mathematics slide courseware, download of intersecting lines and parallel lines PPT courseware , interior angles of the same angle, interior angles of the same side, PPT courseware download, .ppt format

For more information about the PPT courseware "Intersecting Lines and Parallel Lines of Parallel Internal Angles and Parallel Internal Angles", please click the Intersecting Lines and Parallel Lines of Parallel Angles and Parallel Internal Angles ppt tag.

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

"Angles of the same position, internal angles, internal angles of the same side" PPT courseware 2 Learning objectives 1. Know the meaning of three lines and eight angles. 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, and interior angles on the same side..

"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..

File Info

Update Time: 2024-11-14

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

Preview