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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 77

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 77
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 77
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 26° =
  2. Complement of 46° =
  3. Complement of 5° =
  4. Complement of 83° =
  5. Complement of 68° =
  6. Complement of 55° =
  7. Complement of 71° =
  8. Complement of 62° =
  9. Complement of 12° =
  10. Complement of 16° =
  11. Complement of 27° =
  12. Complement of 11° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 77
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 70° =
  2. Supplement of 126° =
  3. Supplement of 120° =
  4. Supplement of 149° =
  5. Supplement of 83° =
  6. Supplement of 138° =
  7. Supplement of 119° =
  8. Supplement of 106° =
  9. Supplement of 141° =
  10. Supplement of 73° =
  11. Supplement of 86° =
  12. Supplement of 122° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 77
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 48° and 54°. Find the third angle.
  2. A triangle has angles 85° and 60°. Find the third angle.
  3. A triangle has angles 41° and 70°. Find the third angle.
  4. A triangle has angles 56° and 57°. Find the third angle.
  5. A triangle has angles 23° and 59°. Find the third angle.
  6. A triangle has angles 72° and 72°. Find the third angle.
  7. A triangle has angles 23° and 115°. Find the third angle.
  8. A triangle has angles 47° and 81°. 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.