CCSS.Math.Content.HSG.CO.D.12

A point that divides, or bisects, a segment into two congruent segments

• Midpont
• Vertex
• Bisector
• Intersection

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CCSS.Math.Content.HSG.CO.D.12

What is this?

• Compass
• Circle creator
• Pencil swingy-thing
• Arc maker

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CCSS.Math.Content.HSG.CO.D.12

A line that contains point M.

• Line q
• Line p
• Line r
• Line NH

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CCSS.Math.Content.HSG.CO.D.12

Perpendicular lines...

• will never intersect
• intersect to form right angles
• are curved lines

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CCSS.Math.Content.HSG.CO.D.12

What does the word BISECT mean?

• To cut something into more than five pieces.
• It is a plane with two sets of wings.
• A shape that has three sides. 
• To cut something into two congruent pieces or in half.

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CCSS.Math.Content.HSG.CO.D.12

Suppose we wish to construct angle EFG congruent to angle DBC using a compass and straightedge. Which step would be correct to do first?

• Place the compass point at B
• Place the compass point at C
• Place the straightedge along A and C
• Place the straightedge along C and D

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CCSS.Math.Content.HSG.CO.D.12

Which diagram shows a correct mathematical construction using only a compass and a straightedge to bisect an angle?

• A
• B
• C
• D

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CCSS.Math.Content.HSG.CO.D.12

A straightedge and compass were used to create the construction. Arc EF was drawn from point B, and arcs with equal radii were drawn from E and F.

• A
• B
• C
• D

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CCSS.Math.Content.HSG.CO.D.12

What is this tool called and what is it used for?

• A ruler used to measure lines.
• A protractor used to measure lines.
• A ruler used to measure angles.
• A protractor used to measure angles.

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CCSS.Math.Content.HSG.CO.D.12

Name the construction.

• midpoint

• perpendicular through a point on the line

• perpendicular through a point NOT on the line

• Circumcenter of a right triangle

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CCSS.Math.Content.HSG.CO.D.12