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Fifth Grade (Grade 5) Triangles Questions

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Grade 5 Triangles CCSS: 5.G.B.4
What kind of triangle is this? Why?
Isosceles Triangle v1
Grade 5 Triangles CCSS: 5.G.B.4
A triangle with equal sides is called a(n)
  1. isosceles triangle.
  2. equilateral triangle.
  3. scalene triangle.
  4. quadrilateral.
Grade 5 Triangles CCSS: 5.G.B.4
Select the statement about triangles that is correct.
  1. A right triangle can be an equilateral triangle.
  2. An isosceles triangle is always a right triangle.
  3. A scalene triangle can be an isosceles triangle.
  4. An equilateral triangle is always an isosceles triangle.
Grade 5 Triangles CCSS: 5.G.B.4
Which type of triangle has 2 sides that are the same length?
  1. isosceles
  2. scalene
  3. equilateral
  4. congruent
Grade 5 Triangles
Describe the 3 types of triangles (by side length).
Grade 5 Triangles
How many triangles make up the figure shown?
Right Triangle ABCD
  1. 1
  2. 2
  3. 3
  4. 4
Grade 5 Triangles CCSS: 5.G.B.4
Classify the triangle by its sides and then by its angles:




sides:                


angles:                
Right Triangle ABC v1
Grade 5 Triangles CCSS: 5.G.B.4
An                  acute triangle                  has three acute angles.
Grade 5 Triangles CCSS: 5.G.B.4
Classify the triangle by its sides and then by its angles:




sides:                


angles:                
Obtuse Triangle ABC v2
Grade 5 Triangles CCSS: 5.G.B.4
An                         isosceles triangle                         has two equal sides and two equal angles.
Grade 5 Triangles CCSS: 5.G.B.4
There are two things that you should look for when classifying triangles. Name them.
Grade 5 Triangles
Identify by side lengths.
Scalene Triangle v2
Grade 5 Triangles CCSS: 5.G.B.4
An                 has one obtuse angle. One angle has a measure greater than 90 degrees.
Grade 5 Triangles CCSS: 5.G.B.4
A                  has no equal sides.
Grade 5 Triangles CCSS: 5.G.B.4
An                 has 3 acute angles. All of its angles measure less than 90 degrees.
Grade 5 Triangles CCSS: 5.G.B.4
An                    has 2 equal sides.
Grade 5 Triangles
Draw an isosceles triangle below.
Grade 5 Triangles CCSS: 5.G.B.4
Describe how a triangle can be classified by its angles.
Grade 5 Triangles
Can you construct triangle ABC?
AB 43mm long.
Grade 5 Triangles
Draw a scalene triangle below.
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