Checking understanding of angles from KS2 | Maths | Quizalize & Oak National Academy

Starter quiz

Find: 180 − 47 = ______.
- '133' ✓
Complete the sentence: 77° is ____________ angle.
- an acute ✓
- a right
- an obtuse
- a reflex
Which of these calculations gives a different answer to the others?
- $180 - 60\times2$
- $360\div6$
- $36 + 24$
- $360-280+20$ ✓
- $54 + {1\over30}\times180$
Which of these is the most accurate description of a polygon?
- A 2D shape with at least one straight side.
- All 2D shapes that are not circles are polygons.
- A 2D shape made up from only straight line segments. ✓
- Triangles and squares are the only polygons.
Which of these properties of a polygon always remain invariant when the polygon is reflected?
- position
- size of angles ✓
- size of sides ✓
- sense
Which of these properties of a polygon always remain invariant when the polygon is positively enlarged?
- position
- size of angles ✓
- size of sides
- sense ✓
- orientation ✓

The angles 119° and $x$ ° are supplementary angles. Find the size of angle $x$ °.
- 51°
- 61° ✓
- 231°
- 241°
- 251°
The size of angle $d$ is measured accurately. Which of these values shows the size of angle $d$ , in degrees?
- 7°
- 57°
- 83° ✓
- 93°
- 278°
The angles 167° and $y$ ° are conjugate angles. Angle $y$ ° is ______°.
- '193' ✓
Match the angle name to its size.
- acute
  
  ⇔
  
  32° ✓
- right angle
  
  ⇔
  
  90° ✓
- obtuse
  
  ⇔
  
  179° ✓
- reflex
  
  ⇔
  
  182° ✓
- one full turn
  
  ⇔
  
  360° ✓
Which of these statements about this diagram are accurate?
- Angles $e$ ° and 125° are supplementary angles.
- Angles $e$ ° and 125° are conjugate angles. ✓
- $e$ = 55.
- $e$ is a major angle. ✓
- $e$ is a minor angle.
QR is a line segment. Find the value of $f+g+h+j$ .
- '327' ✓

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In order for two angles to be supplementary, they must both lie about a point on a straight line.

For two angles to be supplementary, they must sum to 180°. They do not also need to both lie on a straight line.

Supplementary angles - Supplementary angles are a pair of angles that sum to 180°.
Conjugate angles - Conjugate angles are a pair of angles that sum to 360°.