Properties of Triangles WebQuest

Introduction

Dear Student,

Today you will be completing a WebQuest on the properties of triangles. How much do you know already? Please fill in the worksheet as you go.

:)

Mrs. Steel 

Task

You will work through the some websites and answer the questions related. You have the opportunity to complete most of the assignment in class so use your time wisely. If you are able to answer the questions without visiting the website, that is okay, but please visit the website before asking for help.

Good luck!

Process

1. Students will first visit Website 1

 

  • Classifications of triangles by sides

a)       A/An _________ has 3 sides that are equal.

b)      A/An _________ has 2 sides that are equal.

c)       A/An _________ has no sides that are equal.

 

  • Classifications of triangles by angles

d)       A triangle that has one angle that is 90 degrees is a ______triangle.

e)       A triangle that has all 3 angles less than 90 degrees is a _____triangle.

f)       A triangle that has one angle that is greater than 90 degrees is a ___triangle.

 

 

2. Students will visit Website 2

  • Equilateral triangle

  1. Drag all of the orange dots around.  As the triangle gets bigger what happens to the sides of the triangle?

  2. All 3 angles of an equilateral triangle are ____ which makes it also a  _________triangle.

 

 

3. Students will visit Website 3   

  • Isosceles triangle

 

  1. Drag all of the orange dots around.  As the triangle gets bigger and smaller, what happens to the sides of the triangle?

  2. What happens to the angles?  

  3. Are any angles the same? Explain.

  4. Make a speculation about the sides and the respective angles.

 

 

4. Students will visit Website 4

  • Scalene triangle

 

  1. Drag all of the orange dots around.  As the triangle gets bigger and smaller, are any of the sides the same?

  2. What do we know about the interior angles of a scalene triangle?

  3. Make a speculation about the sides and the respective angles.

 

5. Students will visit Website 5

  • Relationship of sides to interior angles in a triangle

 

  1. The shortest side is always opposite the _____________.

  2. The longest side is always opposite the _______________.

  3. Drag all of the points around.  Explore what happens.

  4. Is there a longest and shortest side in an equilateral triangle? Explain.

 

6. Students will visit website 6.

                      a. The triangle sum theorem states that: ________________

                      b. True or False: A triangle can have angles with measurements of 90 degrees, 65 degrees, and 45 degrees. ______

                      c. True or False: A triangle can have measurements of 85 degrees, 45 degrees, and 50 degrees. ______

                

7. Go to both of the following sites to practice...

     a. Classification of Triangles: https://www.ixl.com/math/grade-7/classify-triangles 

     b. Finding missing angles in Triangles: https://www.ixl.com/math/grade-7/find-missing-angles-in-triangles

Evaluation

You will turn in the accompanying worksheet to be graded.