Grade 4 Math · Measurement

Identify angles and classify them as right, straight, acute, or obtuse

10 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest — every one with a full worked solution. Work through them free, no account needed.

Start the 10 questions Curriculum: G4-E2.4

Sample: the first question, solved

What is an angle that measures exactly 90° called?

📘 Worked solution
A right angle.

And one from the hard end

Is a 120° angle acute or obtuse?

Solution shown after you try it in practice mode.

Work through all 10, easiest to hardest

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