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