Types of triangles Flashcards
What is a triangle?

It has 3 sides and 3 corners (vertices)
How is a triangle be identified by?

It is identified either by its
size of angle
length of sides
Is this a ‘Isosceles’ ; ‘Equilateral’ or ‘Scalene’ triangle

Equilateral
3 equal sides
Is this a ‘Isosceles’ ; ‘Equilateral’ or ‘Scalene’ triangle

Isosceles
2 equal sides
Is this a ‘Isosceles’ ; ‘Equilateral’ or ‘Scalene’ triangle

Scalene
no equal side
Is this a ‘Acute angled’ ; ‘Obtuse angled’ or ‘right angled’ triangle?

Acute angles
3 acute angles
Is this a ‘Acute angled’ ; ‘Obtuse angled’ or ‘right angled’ triangle?

Obtuse angles
1 obtuse angle
Is this a ‘Acute angled’ ; ‘Obtuse angled’ or ‘right angled’ triangle?

Right angle
1 right angle