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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 90

Angles worksheets — types of angles and angle sums

Free angles worksheets for Class 4 to 7: name the type of angle (acute, right, obtuse, straight, reflex), complementary, supplementary and triangle angles — with answers.

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Types of angles (Class 4–5)Complementary angles (Class 6–7)Supplementary angles (Class 6–7)Angles of a triangle (Class 6–7)

Types of angles

Class 4–5 · Worksheet 1 · set 90
Name:Date:Score:    / 8

Name the type of the marked angle: acute, right, obtuse, straight or reflex.

  1. Type of angle?
  2. Type of angle?
  3. Type of angle?
  4. Type of angle?
  5. Type of angle?
  6. Type of angle?
  7. Type of angle?
  8. Type of angle?

Complementary angles

Class 6–7 · Worksheet 2 · set 90
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 35° =
  2. Complement of 38° =
  3. Complement of 72° =
  4. Complement of 60° =
  5. Complement of 25° =
  6. Complement of 33° =
  7. Complement of 66° =
  8. Complement of 40° =
  9. Complement of 46° =
  10. Complement of 41° =
  11. Complement of 59° =
  12. Complement of 82° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 90
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 135° =
  2. Supplement of 13° =
  3. Supplement of 25° =
  4. Supplement of 34° =
  5. Supplement of 107° =
  6. Supplement of 129° =
  7. Supplement of 85° =
  8. Supplement of 160° =
  9. Supplement of 61° =
  10. Supplement of 164° =
  11. Supplement of 51° =
  12. Supplement of 119° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 90
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 28° and 113°. Find the third angle.
  2. A triangle has angles 48° and 81°. Find the third angle.
  3. A triangle has angles 49° and 67°. Find the third angle.
  4. A triangle has angles 20° and 110°. Find the third angle.
  5. A triangle has angles 59° and 76°. Find the third angle.
  6. A triangle has angles 90° and 40°. Find the third angle.
  7. A triangle has angles 43° and 52°. Find the third angle.
  8. A triangle has angles 87° and 25°. Find the third angle.

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Questions

What are the 5 types of angles?

Acute (less than 90°), right (90°), obtuse (90°–180°), straight (180°) and reflex (180°–360°).

Are these worksheets free?

Yes — print them or save as PDF free. Every worksheet has an answer key.

How do I get different questions?

Press “🔄 New set” — the questions change (maths numbers are new every time; English sentences are shuffled).

How do I print only one worksheet?

Press “🖨️ Print” on that worksheet. Tick “with answer key” if you want the answers on a second page.

Can my child do this worksheet online, like a quiz?

Yes — press “▶️ Practise online” on any worksheet. The questions come one at a time with instant marking, a score at the end and a review of mistakes. No sign-in is needed.