Checking and securing understanding of similar triangles | Maths

Starter quiz

What is the sum of internal angles of a triangle?
- '180' ✓
Which of these is a property of an isosceles triangle?
- All angles are always equal
- Two angles are always equal ✓
- All sides are different lengths
Which of these is a property of a right angled triangle?
- $a^2 + b^2 = c^2$ ✓
- All sides are equal in length
- They cannot be isosceles.
What are the sizes of the internal angles of a regular triangle?
- 60ᵒ ✓
- 50ᵒ
- 90ᵒ
What type of triangle is this?
- Scalene ✓
- Right angled
- Equilateral
- Isosceles
Match the angle types
- Acute
  
  ⇔
  
  < 90ᵒ ✓
- Right angle
  
  ⇔
  
  90ᵒ ✓
- Obtuse
  
  ⇔
  
  >90ᵒ and <180ᵒ ✓
- Reflex
  
  ⇔
  
  >180ᵒ ✓
- Straight line
  
  ⇔
  
  180ᵒ ✓