Angles, Lines, Triangles and Symmetry

Which of the following statements is NOT a true statement about the triangles?

• Triangle 2 has 2 acute angles and 1 right angle.

• Triangle 3 has 1 obtuse angle.

• Triangle 1 and triangle 2 both have a right angle.

• All of the triangles have at least 2 acute angles.

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CCSS.HSG.CO.C.10

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CCSS.4.G.A.1

CCSS.HSG.CO.A.1

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CCSS.4.G.A.1

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CCSS.1.G.A.1

CCSS.2.G.A.1

Which of the figures of dotted lines are the lines of symmetry?

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CCSS.4.G.A.3

How many lines of symmetry does the figure have?

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CCSS.4.G.A.3

Which square shows a line of symmetry?

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CCSS.4.G.A.3

Which of the following shapes does not have a line of symmetry?

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CCSS.4.G.A.3

Which triangle(s) have an obtuse angle?

• h

• a, h

• a, b, h

• a, b, e, h

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CCSS.4.G.A.2

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CCSS.3.G.A.1