"Constructing Triangles with Rulers and Compasses" Triangle PPT Courseware 3

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"Constructing Triangles with Rulers and Compasses" Triangle PPT Courseware 3

Do it

1. Given the two sides of a triangle and the angle between them, find the triangle.

Known: line segments a, c, ∠α.

Find: △ABC, so that BC=a AB=c, ∠ABC=∠α.

2. Given the two angles of a triangle and the included side, find the triangle.

Known: ∠α, ∠β, line segment c.

Find: △ABC, let ∠A=∠α, ∠B=∠β, AB=c.

practise

1. The only triangle that cannot be made using a ruler and compass is ( )

A. Three known sides

B． Two sides and the angle are known

C. Two angles and included sides are known

D. Two sides and the opposite angle of one of them are known

2. The right triangle that cannot be constructed using a ruler and compass is ( )

A. Given the hypotenuse and a right-angled side

B． Two right angled sides are known

C. Two acute angles are known

D. An acute angle and a right angled side are known

3． Which triangle can be constructed with the following line segments as sides ( )

A. 2cm, 3cm, 5cm

B． 4cm, 4cm, 9cm

C. 1cm, 2cm, 3cm

D. 2cm, 3cm, 4cm

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For more information about the PPT courseware "Using a Ruler and Compass to Construct Triangles from a Triangle", please click the Triangle ppt Constructing a Triangle with a Ruler and Compasses ppt tag.

"Constructing Triangles with Rulers and Compasses" Triangle PPT Courseware 2:

"Constructing Triangles with Rulers and Compasses" Triangle PPT Courseware 2 Do it. Can you make a triangle according to the conditions on page 147 of the book? Cut out the triangles you made and compare them with your partner to see if they are congruent? Can you give a reason why they are equal? Both sides and their included angles are equal.

"Constructing Triangles with Rulers and Compasses" Triangle PPT Courseware:

"Making Triangles with Rulers and Compasses" Triangle PPT Courseware Help: The triangle in Doudou's book is partially stained by ink. He wants to draw a triangle exactly the same as the one in the book. What should he do? Looking Back The basic elements of a triangle are ＿＿＿and＿＿＿..

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Update Time: 2024-11-22

This template belongs to Mathematics courseware Beijing Normal University seventh grade mathematics volume 2 industry PPT template

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