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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 43

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 43
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 43
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 5° =
  2. Complement of 42° =
  3. Complement of 36° =
  4. Complement of 44° =
  5. Complement of 75° =
  6. Complement of 61° =
  7. Complement of 41° =
  8. Complement of 6° =
  9. Complement of 18° =
  10. Complement of 80° =
  11. Complement of 19° =
  12. Complement of 64° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 43
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 11° =
  2. Supplement of 120° =
  3. Supplement of 46° =
  4. Supplement of 135° =
  5. Supplement of 161° =
  6. Supplement of 111° =
  7. Supplement of 98° =
  8. Supplement of 50° =
  9. Supplement of 42° =
  10. Supplement of 17° =
  11. Supplement of 170° =
  12. Supplement of 94° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 43
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 63° and 77°. Find the third angle.
  2. A triangle has angles 63° and 56°. Find the third angle.
  3. A triangle has angles 66° and 51°. Find the third angle.
  4. A triangle has angles 73° and 32°. Find the third angle.
  5. A triangle has angles 53° and 36°. Find the third angle.
  6. A triangle has angles 65° and 72°. Find the third angle.
  7. A triangle has angles 69° and 74°. Find the third angle.
  8. A triangle has angles 37° and 111°. 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.