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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 13

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 13
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 13
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 69° =
  2. Complement of 10° =
  3. Complement of 13° =
  4. Complement of 75° =
  5. Complement of 85° =
  6. Complement of 39° =
  7. Complement of 7° =
  8. Complement of 42° =
  9. Complement of 14° =
  10. Complement of 21° =
  11. Complement of 64° =
  12. Complement of 17° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 13
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 138° =
  2. Supplement of 125° =
  3. Supplement of 49° =
  4. Supplement of 12° =
  5. Supplement of 168° =
  6. Supplement of 117° =
  7. Supplement of 145° =
  8. Supplement of 43° =
  9. Supplement of 139° =
  10. Supplement of 157° =
  11. Supplement of 116° =
  12. Supplement of 128° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 13
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 70° and 41°. Find the third angle.
  2. A triangle has angles 63° and 70°. Find the third angle.
  3. A triangle has angles 59° and 60°. Find the third angle.
  4. A triangle has angles 24° and 88°. Find the third angle.
  5. A triangle has angles 32° and 62°. Find the third angle.
  6. A triangle has angles 99° and 47°. Find the third angle.
  7. A triangle has angles 75° and 23°. Find the third angle.
  8. A triangle has angles 40° and 102°. 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.