Types of angles

Types of angles

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Overview
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Connecting to the Curriculum
Marking Student Responses
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Further Resources
This task is about different types of angles.
Choose the correct picture for each of the following angles

Question

i)    Right Angle

    • diagram of angle.png

    • diagram of angle.png

    • diagram of angle.png

    • diagram of angle.png

    • diagram of angle.png

Question

ii)   Reflex Angle

    • diagram of angle.png

    • diagram of angle.png

    • diagram of angle.png

    • diagram of angle.png

    • diagram of angle.png

Question

iii)  Straight Angle

    • diagram of angle.png

    • diagram of angle.png

    • diagram of angle.png

    • diagram of angle.png

    • diagram of angle.png

Question

iv)   Obtuse Angle

    • diagram of angle.png

    • diagram of angle.png

    • diagram of angle.png

    • diagram of angle.png

    • diagram of angle.png

Question 1Change answer

b)   In the shape below, the angle marked 'w'can be written as Q angle.pngQRS.
      Name the other 3 angles marked in the shape.
 
square with four labelled internal angles.png
i)   x = Q angle.png 
ii)  y = Q angle.png 
iii) z = Q angle.png 
Task administration: 
This task can be completed with pencil and paper or online.
Copyright: 
All graphics copyright NZCER
Level:
4
Curriculum info: 
Maths, Geometry and Measurement, Shape
Keywords: 
angles, angle properties, matching
Description of task: 
Students select the correct name for angle diagrams (e.g. obtuse etc.) and write the names of three angles identified in a shape.
Curriculum Links: 
This resource can be used to help to identify students' understanding of types of angles and their properties.
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Geometric thinking, sets 4-5
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
 

Y8 (11/1998)
a)   4 correct – moderate

3 correct – easy
b) i)
ii)
iii)		 STQ or QTS
RSQ or QSR
SQT or TQS		 easy
very difficult
Diagnostic and formative information: 
  Common error Likely reason
a) Various Doesn't know "reflex" or "obtuse" angles.
b) i) TQR or TSR Starts at vertex T rather than T being the middle vertex named.
b) ii)
    ii)		 RST or TSR
RQT or TQR		 Names the whole right angle rather than the angle marked.