Geometry | Unit 2 | Lesson 10: Practicing Proofs | Practice Problems

Painters and carpenters use scaffolding to climb buildings from the outside. What shapes do you see? Why does one figure have more right angles?

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CCSS.2.G.A.1

Select all true statements based on the diagram.

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CCSS.HSG.CO.C.11

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CCSS.HSG.C.A.3

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CCSS.HSG.CO.C.9

Elena is thinking through a proof using a reflection to show that the base angles of an isosceles triangle are congruent. Complete the missing information for her proof.

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CCSS.HSG.SRT.B.5

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CCSS.HSG.CO.C.9

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CCSS.8.G.A.2

CCSS.HSG.CO.B.6