| Category | Format | Size |
|---|---|---|
| Jiangsu Education Edition Fourth Grade Mathematics Volume 2 | pptx | 6 MB |
"Classification of Triangles" Triangles, Parallelograms and Trapezoid PPT Courseware
Description
"Classification of Triangles" Triangles, Parallelograms and Trapezoid PPT Courseware
Triangle Question
Are all equilateral triangles isosceles triangles?
Are all isosceles triangles acute triangles?
Does any triangle have two acute angles?
Challenge yourself
1. It is known that the lengths of two sides of an isosceles triangle are 4cm and 5cm, then its perimeter is ( ).
2. It is known that the perimeter of an isosceles triangle is 15cm and one of its sides is 7cm. Then its waist length is ( ).
3. It is known that the lengths of the two sides of an isosceles triangle are 4cm and 8cm respectively, then its perimeter is ( ).
Classroom testing
1. For the following statements, put a √ inside ( ) that you think is correct.
(1) A triangle with one acute angle is an acute triangle. ( )
(2) A right triangle only needs two acute angles. ( )
(3) If the largest angle in a triangle is less than 90 degrees, then the triangle must be an acute triangle. ( )
(4) A triangle is either an acute triangle or an obtuse triangle. ( )
2. Draw a right triangle, acute triangle, obtuse triangle, isosceles triangle and equilateral triangle on the idea diagram below.
3. Can you classify triangles?
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For more information about the "Classification of Triangles Triangles Parallelograms and Trapezoids" PPT courseware, please click the Classification of Triangles PPT Triangles Parallelograms and Trapezoid PPT tag.
"Classification of Triangles" Triangle PPT teaching courseware:
"Classification of Triangles" Triangle PPT Teaching Courseware Part One Content: Lesson Objectives 1. Be able to classify triangles according to the characteristics of their sides and angles, and recognize acute, right and obtuse triangles, isosceles and equilateral triangles. 2. Understand the mathematical ideas of classification and cultivate...
"Classification of Triangles" Triangle PPT download:
"Classification of Triangles" Download Triangle PPT Part One: Learning Objectives 1. Through hands-on operations, you will be able to classify triangles according to the characteristics of angles and sides. 2. Cultivate students’ manual, mental and analytical reasoning abilities. [Key points] According to the characteristics and sides of angles...
"Classification of Triangles" Triangle PPT:
"Classification of Triangles" Triangle PPT Part One Content: Learning Objectives 1. Experience the process of classifying triangles by sides or angles, experience the idea of classification, and understand isosceles triangles, equilateral triangles, right-angled triangles, acute-angled triangles and obtuse-angled triangles. 2.Can...
File Info
Update Time: 2024-07-27
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