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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 28

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 28
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 28
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 7° =
  2. Complement of 70° =
  3. Complement of 55° =
  4. Complement of 67° =
  5. Complement of 63° =
  6. Complement of 35° =
  7. Complement of 6° =
  8. Complement of 51° =
  9. Complement of 19° =
  10. Complement of 74° =
  11. Complement of 43° =
  12. Complement of 11° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 28
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 43° =
  2. Supplement of 130° =
  3. Supplement of 68° =
  4. Supplement of 80° =
  5. Supplement of 74° =
  6. Supplement of 160° =
  7. Supplement of 124° =
  8. Supplement of 151° =
  9. Supplement of 162° =
  10. Supplement of 37° =
  11. Supplement of 144° =
  12. Supplement of 95° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 28
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 64° and 58°. Find the third angle.
  2. A triangle has angles 42° and 93°. Find the third angle.
  3. A triangle has angles 47° and 26°. Find the third angle.
  4. A triangle has angles 80° and 53°. Find the third angle.
  5. A triangle has angles 38° and 96°. Find the third angle.
  6. A triangle has angles 71° and 55°. Find the third angle.
  7. A triangle has angles 43° and 52°. Find the third angle.
  8. A triangle has angles 28° and 109°. 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.