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Worksheet: Types of Triangles

Q1:

Which of the following describes the given shape?

  • Aacute triangle
  • Bobtuse triangle
  • Cisoceles triangle
  • Dright triangle
  • Eequilateral triangle

Q2:

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

  • A no
  • B yes

Q3:

Which of the following describes the given shape?

  • Aobtuse isoceles triangle
  • Bright scalene triangle
  • Cacute isoceles triangle
  • Dright isoceles triangle
  • Eacute scalene triangle

Q4:

Which of the following describes the given shape?

  • Aequilateral triangle
  • Bscalene triangle
  • Cobtuse triangle
  • Disoceles triangle
  • Eright triangle

Q5:

What do these shapes have in common?

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

Q6:

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

Q7:

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

  • Atrue
  • Bfalse

Q8:

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

  • Afalse
  • Btrue

Q9:

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

  • Atrue
  • Bfalse

Q10:

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

  • Aobtuse scalene
  • Bright scalene
  • Cacute scalene
  • Dacute equilateral

Q11:

Which of the following describes the given shape?

  • Aobtuse triangle
  • Bright triangle
  • Cisoceles triangle
  • Dacute triangle
  • Eequilateral triangle

Q12:

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

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

Q13:

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

Q14:

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

  • Atrue
  • Bfalse

Q15:

Is an equilateral triangle an isosceles triangle?

  • Ayes
  • Bno

Q16:

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

  • Afalse
  • Btrue

Q17:

What do these shapes have in common?

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

Q18:

Which of the following describes the given shape?

  • Aisoceles triangle
  • Bscalene triangle
  • Cobtuse triangle
  • Dequilateral triangle
  • Eright triangle

Q19:

Which of the following describes the given shape?

  • Aacute triangle
  • Bright triangle
  • Cisoceles triangle
  • Dobtuse triangle
  • Eequilateral triangle

Q20:

Could an isosceles triangle also be an equilateral triangle?

  • Ano
  • Byes