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Sort the Angles: Acute or Obtuse

In this worksheet, students sort angles into acute or obtuse.

'Sort the Angles: Acute or Obtuse' worksheet

Key stage:  KS 2

Curriculum topic:   Geometry: Properties of Shapes

Curriculum subtopic:   Identify Acute/Obtuse Angles

Difficulty level:  

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Worksheet Overview

QUESTION 1 of 10

This worksheet is about spotting acute and obtuse angles.

 

Example

Sort the angles into acute and obtuse.

 

(a) Obtuse (b) Obtuse (c) Acute

 

 


(d) Acute (e) Acute (f) Obtuse
 

 

 

Answer

Acute angles: c, d, e.  

These are less than 90° (a right angle).

 

Obtuse angles: a, b, f.  

These are more than 90° (a right angle) but less than 180° (a straight line).

 

Want to understand this further and learn how this links to other topics in maths?
Why not watch this video?

 

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

 abcdef
acute
obtuse

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

 abcdef
acute
obtuse

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

 abcdef
acute
obtuse

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

 abcdef
acute
obtuse

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

 abcdef
acute
obtuse

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

 abcdef
acute
obtuse

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

 abcdef
acute
obtuse

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

 abcdef
acute
obtuse

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

 abcdef
acute
obtuse

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 abcdef
acute
obtuse
  • Question 1

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

CORRECT ANSWER
 abcdef
acute
obtuse
EDDIE SAYS
Acute angles are less than 90 degrees (right angle). Obtuse angles are greater than 90 degrees, but less than 180 degrees (straight line).
  • Question 2

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

CORRECT ANSWER
 abcdef
acute
obtuse
EDDIE SAYS
Acute angles are less than 90 degrees (right angle). Obtuse angles are greater than 90 degrees, but less than 180 degrees (straight line).
  • Question 3

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

CORRECT ANSWER
 abcdef
acute
obtuse
EDDIE SAYS
Acute angles are less than 90 degrees (right angle). Obtuse angles are greater than 90 degrees, but less than 180 degrees (straight line).
  • Question 4

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

CORRECT ANSWER
 abcdef
acute
obtuse
EDDIE SAYS
Acute angles are less than 90 degrees (right angle). Obtuse angles are greater than 90 degrees, but less than 180 degrees (straight line).
  • Question 5

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

CORRECT ANSWER
 abcdef
acute
obtuse
EDDIE SAYS
Acute angles are less than 90 degrees (right angle). Obtuse angles are greater than 90 degrees, but less than 180 degrees (straight line).
  • Question 6

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

CORRECT ANSWER
 abcdef
acute
obtuse
EDDIE SAYS
Acute angles are less than 90 degrees (right angle). Obtuse angles are greater than 90 degrees, but less than 180 degrees (straight line).
  • Question 7

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

CORRECT ANSWER
 abcdef
acute
obtuse
EDDIE SAYS
Acute angles are less than 90 degrees (right angle). Obtuse angles are greater than 90 degrees, but less than 180 degrees (straight line).
  • Question 8

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

CORRECT ANSWER
 abcdef
acute
obtuse
EDDIE SAYS
Acute angles are less than 90 degrees (right angle). Obtuse angles are greater than 90 degrees, but less than 180 degrees (straight line).
  • Question 9

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
 

 

CORRECT ANSWER
 abcdef
acute
obtuse
EDDIE SAYS
Acute angles are less than 90 degrees. Obtuse angles are more than 90 but less than 180.
  • Question 10

Sort the angles into acute and obtuse.

 

(a) Angle (b) Angle (c) Angle

 

 


(d) Angle (e) Angle (f) Angle
CORRECT ANSWER
 abcdef
acute
obtuse
EDDIE SAYS
Acute angles are less than a right angle. Obtuse angles are more than a right angle but less than a straight line.
---- OR ----

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