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Triangles Questions - All Grades

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Grade 8 Triangles
How many degrees are there in a triangle?
  1. 90°
  2. 45°
  3. 180°
  4. 360°
Grade 4 Triangles CCSS: 4.G.A.2
Name the triangle.
Right Triangle v1
  1. Acute
  2. Right
  3. Obtuse
Grade 8 Triangles CCSS: 8.G.A.5
What is the measure of one external angle of an equilateral triangle?
  1. 30°
  2. 60°
  3. 120°
  4. 180°
Grade 4 Triangles CCSS: 4.G.A.2
What kind of triangle is shown?
Isosceles Triangle v1
  1. right
  2. equilateral
  3. isosceles
  4. scalene
Grade 5 Triangles CCSS: 5.G.B.4
Classify this triangle.
Obtuse Triangle v2
  1. scalene, obtuse
  2. scalene, acute
  3. isosceles, right
  4. isosceles, obtuse
Grade 5 Triangles CCSS: 5.G.B.4
A(n)                      is a triangle that has 3 equal sides.
  1. right triangle
  2. equilateral triangle
  3. scalene triangle
  4. isosceles triangle
Grade 5 Triangles CCSS: 5.G.B.4
Elijah cuts out a triangle from a piece of cardboard as shown. Which of the following best describes Elijah's triangle?
Obtuse Triangle v3
  1. Acute and scalene
  2. Obtuse and scalene
  3. Acute and isosceles
  4. Obtuse and isosceles
Grade 4 Triangles
Which of the following best describes how triangles are classified?
  1. overall size and side length
  2. side length and angle measure
  3. number of sides and overall size
  4. angle measure and number of sides
Grade 9 Triangles
The point of concurrency of a triangle's three medians.
  1. Midsegment of a triangle
  2. Incenter
  3. Centroid
  4. Orthocenter
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