Worksheet: Angle Classification

In this worksheet, we will practice classifying angles according to their measures.

Q1:

Count the acute angles in this picture.

Q2:

Which point is the vertex of the angle?

  • A 𝑅
  • B 𝑇
  • C 𝑆

Q3:

Which of the following defines an acute angle?

  • AAn acute angle is an angle whose measure is more than 1 8 0 ∘ .
  • BAn acute angle is an angle whose measure is more than 9 0 ∘ but less than 1 8 0 ∘ .
  • CAn acute angle is an angle whose measure is equal to 9 0 ∘ .
  • DAn acute angle is an angle whose measure is more than 0 ∘ and less than 9 0 ∘ .
  • EAn acute angle is an angle whose measure is equal to 1 8 0 ∘ .

Q4:

Which of the following defines an obtuse angle?

  • AAn obtuse angle is an angle whose measure is more than 1 8 0 ∘ .
  • BAn obtuse angle is an angle whose measure is less than 9 0 ∘ .
  • CAn obtuse angle is an angle whose measure is equal to 9 0 ∘ .
  • DAn obtuse angle is an angle whose measure is more than 9 0 ∘ but less than 1 8 0 ∘ .
  • EAn obtuse angle is an angle whose measure is equal to 1 8 0 ∘ .

Q5:

What is the measure of a straight angle?

Q6:

Determine the type of the angle highlighted in orange.

  • Aright angle
  • Bobtuse angle
  • Cacute angle

Q7:

Determine the type of the angle highlighted in orange.

  • Aacute angle
  • Bright angle
  • Cobtuse angle

Q8:

Determine the type of the angle highlighted in orange.

  • Aacute angle
  • Bobtuse angle
  • Cright angle

Q9:

How many obtuse angles are there in the figure?

Q10:

What kind of angle is in the figure?

  • Astraight angle
  • Bobtuse angle
  • Cright angle
  • Dacute angle

Q11:

Karim got home at 8:00. If he wants to wait until the hands of the clock form a right angle before going out again, until what hour must he wait?

  • A11:00
  • B10:00
  • C12:00
  • D9:00
  • E1:00

Q12:

Mona set her alarm at 4:20 am. When the alarm rang, she snoozed it for 10 minutes. Determine the type of angle that the two clock hands will form when the alarm rings a second time.

  • Aobtuse
  • Bright
  • Cacute

Q13:

Which two rays are the sides of this angle?

  • A  𝑂 𝐸 ,  𝐷 𝐸
  • B  𝑂 𝐷 ,  𝑂 𝐸
  • C  𝐷 𝑂 ,  𝐷 𝐸

Q14:

What is the name of the labelled angle?

  • A ∠ 𝐴 𝐶 𝐵
  • B ∠ 𝐵 𝐴 𝐶
  • C ∠ 𝐶 𝐵 𝐴

Q15:

How many degrees are there in a straight line?

  • A 3 6 0 ∘
  • B 9 0 ∘
  • C 1 8 0 ∘

Q16:

Determine the type of angle that the two hands on a clock form when the time is 06:05.

  • Aright
  • Bacute
  • Cobtuse

Q17:

At which of these times do the clock hands form a right angle?

  • A1 o’clock
  • B11 o’clock
  • C7 o’clock
  • D9 o’clock

Q18:

What kind of angle is in the figure?

  • Aobtuse angle
  • Bacute angle
  • Cstraight angle
  • Dright angle

Q19:

What kind of angle is in the figure?

  • Aobtuse angle
  • Bright angle
  • Cacute angle
  • Dstraight angle

Q20:

Determine the type of angle that the two hands on a clock form when the time is 01:30.

  • Aright
  • Bacute
  • Cobtuse

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