Open Up - Grade 7 - Mathematics - Unit 7 - Lesson 9

Which of these three triangles is impossible to draw?

• A triangle where one angle measures 20o and another angle measures 45o.
• A triangle where one angle measures 120o and another angle measures 50o.
• A triangle where one angle measures 90o and another angle measures 100o.

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7.G.2

A triangle has an angle measuring 90o, an angle measuring 20o, and a side that is 6 units long. The 6-unit side is in between the 90o and 20o angles.Sketch this triangle and label your sketch with the given measures.(show your work)How many unique triangles can you draw like this?(Multiple Choice)

• Only two unique Triangles can be drawn like this
• Only one unique Triangle can be drawn like this
• This type of Triangle does not exist.
• Only three unique Triangles can be drawn like this
• Every unique Triangle can be drawn like this

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7.G.2

Find a value for x that makes -x less than 2x.

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7.G.2

Find a value for x that makes -x greater than 2x.

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7.G.2

A factory produces 3 bottles of sparkling water for every 7 bottles of plain water. If those are the only two products they produce.What percentage of their production is sparkling water?

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7.G.2

A factory produces 3 bottles of sparkling water for every 7 bottles of plain water. If those are the only two products they produce.What percentage is plain?

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7.G.2