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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 68

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 68
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 68
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 42° =
  2. Complement of 9° =
  3. Complement of 35° =
  4. Complement of 39° =
  5. Complement of 61° =
  6. Complement of 43° =
  7. Complement of 56° =
  8. Complement of 40° =
  9. Complement of 36° =
  10. Complement of 25° =
  11. Complement of 27° =
  12. Complement of 6° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 68
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 97° =
  2. Supplement of 158° =
  3. Supplement of 100° =
  4. Supplement of 142° =
  5. Supplement of 74° =
  6. Supplement of 157° =
  7. Supplement of 68° =
  8. Supplement of 50° =
  9. Supplement of 153° =
  10. Supplement of 90° =
  11. Supplement of 32° =
  12. Supplement of 54° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 68
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 68° and 60°. Find the third angle.
  2. A triangle has angles 63° and 40°. Find the third angle.
  3. A triangle has angles 89° and 30°. Find the third angle.
  4. A triangle has angles 53° and 84°. Find the third angle.
  5. A triangle has angles 64° and 67°. Find the third angle.
  6. A triangle has angles 45° and 28°. Find the third angle.
  7. A triangle has angles 64° and 30°. Find the third angle.
  8. A triangle has angles 67° and 40°. 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.