| Category | Format | Size |
|---|---|---|
| People's Education Press fourth grade mathematics volume 2 | pptx | 6 MB |
"Sum of Interior Angles of a Triangle" Triangle PPT Courseware 2
Description
"Sum of Interior Angles of a Triangle" Triangle PPT Courseware 2
learning target
1. Understand the sum of the interior angles of a triangle.
2. Be able to use the properties and definitions of parallel lines to prove that the sum of the interior angles of a triangle is equal to 1800
3. Learn to solve practical problems related to angles.
4. Initial development of students’ reasoning ability.
Self-study guidance
think:
1. What is the sum of the three interior angles of a triangle?
2. How to derive and prove the sum of the interior angles of a triangle? What are your methods?
3. What problems can be solved by applying the sum of interior angles of triangles?
think about it
What is the sum of the three interior angles of a triangle?
Is there any way to verify this?
Try putting the three corners together
Question: Is there any way to get 180°
1. The measure of a straight angle is 180°
2. Two straight lines are parallel and the sum of interior angles on the same side is 180°
Can you think of a way to prove it from the process of fighting just now?
Test yourself!
1. In △ABC, ∠A=80°, ∠B=∠C, find the degree of ∠C.
2. It is known that the ratio of the measures of the three interior angles of a triangle is 1:3:5. Find the measures of these three interior angles.
Keywords: Triangle courseware, sum of interior angles of a triangle courseware, New People's Education Edition fourth grade mathematics PPT courseware, fourth grade mathematics slide courseware download, triangle PPT courseware download, sum of interior angles of a triangle PPT courseware download, .ppt format
For more information about the PPT courseware "Sum of Interior Angles of Triangles and Triangles", please click the "Sum of Interior Angles of Triangles and Triangles" ppt tab.
"Interior and Exterior Angle of a Triangle" PPT download:
"Interior Angle and Exterior Angle of a Triangle" PPT download part one: Think about the sum of the three interior angles of a triangle. How can you verify it? Tips: Try putting the three angles together to try the verification method: such as Figure: Extend BC to CD, and make CE∥AB then...
"Interior and Exterior Angle of Triangle" PPT courseware:
"Interior Angle and Exterior Angle of a Triangle" PPT courseware Part One Content: Interior Angle and Exterior Angle of a Triangle Review Questions: 1. What are the interior angles of a triangle? 2. What is the relationship between the three interior angles of a triangle? Jigsaw Puzzle: Tear off the three interior angles of a triangle..
"Interior and Exterior Angle of Triangle" PPT:
"Interior Angle and Exterior Angle of Triangle" PPT Part One Content: Review the past and learn new things 1. Related concepts of triangles: 1. What is a triangle: A figure composed of three line segments that are not on the same straight line and are connected end to end is called a triangle. 2. Vertex: Use a big...
File Info
Update Time: 2024-06-30
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