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Lesson: Types of Triangles

Sample Question Videos

Worksheet • 20 Questions • 6 Videos

Q1:

Which of the following describes the given shape?

  • Aright triangle
  • Bequilateral triangle
  • Cobtuse triangle
  • Disoceles triangle
  • Eacute triangle

Q2:

Which of the following describes the given shape?

  • Aright isoceles triangle
  • Bacute scalene triangle
  • Cright scalene triangle
  • Dacute isoceles triangle
  • Eobtuse isoceles triangle

Q3:

Which of the following describes the given shape?

  • Aisoceles triangle
  • Bright triangle
  • Cscalene triangle
  • Dobtuse triangle
  • Eequilateral triangle

Q4:

What do these shapes have in common?

  • ABoth are isosceles triangles.
  • BBoth are equilateral triangles.
  • CBoth are obtuse triangles.
  • DBoth are acute triangles.
  • EBoth are right triangles.

Q5:

Nabil drew an equilateral triangle with two sides whose sum equals 16 inches. Determine the length of the third side.

Q6:

Which of the following describes the given shape?

  • Aacute triangle
  • Bequilateral triangle
  • Cright triangle
  • Disoceles triangle
  • Eobtuse triangle

Q7:

Which of the following describes the given shape?

  • Aobtuse triangle
  • Bequilateral triangle
  • Cright triangle
  • Disoceles triangle
  • Eacute triangle

Q8:

Is it possible to draw a triangle with two obtuse angles?

  • A yes
  • B no

Q9:

Complete the following: An equilateral triangle is a triangle whose sides are .

  • A equal in length
  • B parallel
  • C intersecting at one point
  • D not equal in length

Q10:

Which of the following describes the given shape?

  • Aequilateral triangle
  • Bright triangle
  • Cscalene triangle
  • Dobtuse triangle
  • Eisoceles triangle

Q11:

Determine whether this statement is true or false: Some right triangles are isosceles.

  • Afalse
  • Btrue

Q12:

Determine whether this statement is true or false: Some obtuse triangles are isosceles.

  • Afalse
  • Btrue

Q13:

Determine whether this statement is true or false: The angles of the equilateral triangle are acute.

  • Afalse
  • Btrue

Q14:

Determine whether this statement is true or false: The angles of the isosceles triangle are always acute.

  • Atrue
  • Bfalse

Q15:

Is an equilateral triangle an isosceles triangle?

  • Ano
  • Byes

Q16:

Could an isosceles triangle also be an equilateral triangle?

  • Ayes
  • Bno

Q17:

What do these shapes have in common?

  • ABoth are isosceles triangles.
  • BBoth are equilateral triangles.
  • CBoth are obtuse triangles.
  • DBoth are acute triangles.
  • EBoth are right triangles.

Q18:

Describe the triangle using an adjective from the list acute, right, obtuse and the list equilateral, isosceles, scalene.

  • Aacute equilateral
  • Bright scalene
  • Cacute scalene
  • Dobtuse scalene

Q19:

Determine whether this statement is true or false: All acute triangles are isosceles.

  • Atrue
  • Bfalse

Q20:

Complete the following: Any triangle has at least acute angles.

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