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WorksheetsClassifying Triangles Angles and Shapes
Total questions: 20
Worksheet time: 20mins
Isosceles Triangle
Equilateral Triangle
Right Triangle
Scalene Triangle
No sides are the same length
Equilateral Triangle
Isosceles Triangle
Scalene Triangle
Right Triangle
An acute triangle is
A triangle with 1 obtuse angle
A triangle with all sides the same length
A parallelogram
A triangle with 3 acute angles
angle is an obtuse angle
Isosceles Triangle
Obtuse Triangle
Acute Triangle
Scalene Triangle
Classify the triangle by its angles.
Acute Triangle
Right Triangle
Obtuse Triangle
What kind of triangle is this?
acute
right
obtuse
360 degrees
Jalen cut out several triangle shapes from paper and placed them in one of the four categories below. Which triangles above are correctly categorized?
I am a triangle with an angle larger than 90 degrees.
What type of triangle am I?
right triangle
obtuse triangle
acute triangle
Match the following
Right Triangle
One Angle is 90 degrees
Obtuse Triangle
One Angle More than 90 degrees
Acute Triangle
All Angles Less than 90 degrees
Isosceles Triangle
Two sides of equal length
Scalene Triangle
All sides of different lengths
What type of triangle is shown?
Isosceles
Right-angled
Equilateral
Scalene
The graphic organizer shown can be used to classify triangles.
Which triangle CAN NOT be classified as an isosceles triangle?
Classifying triangles by angles
Acute
All three angles are acute
Obtuse
Exactly one obtuse angle
Right
Exactly one right angle
Equiangluar
All angles are congruent
The triangle is (a) because it has (b)
A right triangle
A right angle and two acute angles
An acute angle
An obtuse angle and two acute angles
At least two sides are the same length
Isosceles Triangle
Equilateral Triangle
Scalene Triangle
Right Triangle
Which statement about the two triangles are correct?
Both triangles are acute triangles.
Both triangles are obtuse triangles.
Triangle 1 is an obtuse triangle, and Triangle 2 is a right triangle.
Triangle 1 is an obtuse triangle, and Triangle 2 is an acute triangle.
Which triangles appear to be right triangles?
1 and 2
1 and 5
2 and 5
3 and 4
A triangle with one 90 degree angle and two sides of equal length
isosceles right triangle
isosceles obtuse triangle
equilateral acute triangle
scalene right
triangle
a triangle with one angle over 90 degrees and no sides of equal length
scalene obtuse triangle
equilateral acute triangle
scalene right triangle
isosceles obtuse
triangle
Which figures belong in the part of the organizer labeled “Isosceles triangles”?
Figures II and V only
Figures I, III, and V only
Figures I and III only
Figures II, IV, and V only
A triangle with all angles less than 90 degrees and all sides of equal length
equilateral acute
triangle
isosceles right
triangle
equilateral obtuse
triangle
scalene acute
triangle
