"Sum of Interior Angles of a Triangle" Triangle PPT Courseware

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"Sum of Interior Angles of a Triangle" Triangle PPT Courseware

Draw any different types of triangles.

Measure and calculate the sum of the three interior angles.

Consolidation exercises

Look at the picture and find the measure of the unknown angle in the triangle.

In a triangle, ∠1=1400, ∠3=250, find the degree of ∠2.

I am the little judge: (Pick “√” if the following statements are correct and “×” if they are incorrect)

1. A triangle has at most one obtuse angle (or one right angle) and at least two acute angles. ( )

2. The sum of the interior angles of an obtuse triangle is greater than the sum of the interior angles of an acute triangle. ( )

3. Divide an isosceles triangle into two identical small triangles. The sum of the interior angles of each triangle is 90 degrees. ( )

4. The sum of the two acute angles of a right triangle is 90 degrees. ( )

5. The sum of the interior angles of any triangle is 180 degrees. ( )

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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...

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Update Time: 2024-10-23

This template belongs to Mathematics courseware People's Education Press fourth grade mathematics volume 2 industry PPT template

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