Open Up - Grade 8 - Mathematics - Unit 1 - Lesson 15

In triangle ABC, the measure of angle A is 40o.Give possible measures for angles B and C if triangle ABC is isosceles.

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8.G.2

In triangle ABC, the measure of angle A is 40o.Give possible measures for angles B and C if triangle ABC is right.

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7.G.2

8.G.5

8.G.2

In triangle ABC, the measure of angle A is 40o.Give possible measures for angles B and C if triangle ABC is right.

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7.G.2

8.G.5

8.G.2

For each set of angles, decide if there is a triangle whose angles have these measures in degrees:

• 60, 60, 60
• 90, 90, 45
• 30, 40, 50
• 90, 45, 45
• 120, 30, 30

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Angle A in triangle ABC is obtuse. Can angle B or angle C be obtuse?

• Yes, the angle could be obuse.
• No, the angle cant be obuse.

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For each pair of polygons, describe the transformation that could be applied to Polygon A to get Polygon B.

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8.G.2

For each pair of polygons, describe the transformation that could be applied to Polygon A to get Polygon B.

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7.G.2

8.G.5

8.G.2

For each pair of polygons, describe the transformation that could be applied to Polygon A to get Polygon B.

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7.G.2

8.G.5

8.G.2