"Determination of Parallel Lines" Proof of Parallel Lines PPT

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"Determination of Parallel Lines" Proof of Parallel Lines PPT, 20 pages in total.

Part One: Learning Objectives

1. Understand and master the axioms and theorems of parallel lines. (emphasis)

2. Understand the general steps of proof. (difficulty)

Judgment of parallel lines PPT, part 2 content: teaching new lessons

Judgment of parallel lines

Axiom: If two straight lines are intercepted by a third straight line, if their angles are equal, then the two straight lines are parallel.

Simply put: the same angles are equal and the two straight lines are parallel

Theorem: If two straight lines are intercepted by a third straight line, if the internal offset angles are equal, then the two straight lines are parallel.

This theorem can be simply stated as: internal offset angles are equal and two straight lines are parallel.

Judgment of parallel lines PPT, part 3: practice in class

1. For each corner marked in the figure, the following conditions can infer that a∥b is ( )

A.∠1=∠2

B.∠2=∠4

C.∠3=∠4

D.∠1+∠4=180°

2. As shown in the figure, ∠1=75°. To make a∥b, then ∠2 is equal to ( )

A.75°

B.95°

C.105°

D.115°

Judgment of Parallel Lines PPT, Part 4: Class Summary

How to determine if two straight lines are parallel

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"Determination of Parallel Lines" Proof of Parallel Lines PPT teaching courseware:

"Determination of Parallel Lines" Parallel Lines Proof PPT Teaching Courseware, a total of 17 pages. Part I Content: Knowledge Points Basics Knowledge Point 1 Corresponding angles are equal and two straight lines are parallel 1. In the following figures, the one that can definitely get AB∥CD from 1=2 is (A) 2. As shown in the figure, in the same plane..

"Determination of Parallel Lines" Proof of Parallel Lines PPT Download:

"Determination of Parallel Lines" Proof of Parallel Lines PPT download, 20 pages in total. The first part of the content: Learning objectives: Use the relationship between angles to determine that two straight lines are parallel. Use a third straight line to determine that two straight lines are parallel... Determination of parallel lines PPT, the second part of the content: Insights...

"Determination of Parallel Lines" PPT courseware download of intersecting lines and parallel lines:

"Determination of Parallel Lines" PPT Courseware Download of Intersecting Lines and Parallel Lines Part One Content: Learning Objectives 1. Master the three determination methods of parallel lines, and be able to use the determination methods to determine whether two straight lines are parallel; (Key Points) 2. Be able to judge based on How to determine parallel lines...

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Update Time: 2024-11-24

This template belongs to Mathematics courseware Beijing Normal University Edition Eighth Grade Mathematics Volume 1 industry PPT template

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