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Grade 7 maths · S.12 · Angles and triangles

Can a triangle have these angle measures?

The three angles must add up to exactly 180 degrees. Write yes or no.

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  1. Can a triangle have angles of 89°, 45° and 66°? Write yes or no.

    Answer: no

  2. Can a triangle have angles of 99°, 66° and 35°? Write yes or no.

    Answer: no

  3. Can a triangle have angles of 38°, 56° and 98°? Write yes or no.

    Answer: no

Tip: The three angles must add up to exactly 180 degrees. Write yes or no.

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