Introduction to Midsegment Theorem

Please watch the video and then answer:

What is the definition of a midsegment?

• A line segment that connects the midpoints of three sides of a triangle.

• The point in the middle of the triangle

• A line segment that connects the midpoints of two sides of a triangle.

• A line segment that connects the endpoints of a triangle

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CCSS.MATH.CONTENT.HSG.CO.A.4

CCSS.MATH.CONTENT.HSG.CO.C.10

Which of the following is a property of midsegments?

• They are perpendicular to the third side of the triangle.

• They are congruent to the third side of the triangle.

• They are parallel to the third side of the triangle.

• They are bisectors of the third side of the triangle.

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CCSS.MATH.CONTENT.HSG.CO.A.4

CCSS.MATH.CONTENT.HSG.CO.C.10

Name a midsegment of ⌂ABC

• segment AC
• segment DE
• segment AB
• segment BC

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CCSS.MATH.CONTENT.HSG.CO.C.10

CCSS.MATH.CONTENT.HSG.CO.A.4

What is the definition of parallel lines?

• Lines that intersect at one point

• Lines that are perpendicular to each other

• Lines that intersect at multiple points

• Lines that never intersect

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CCSS.MATH.CONTENT.HSG.CO.A.4

Is DE parallel to BC?

• Yes
• No

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CCSS.MATH.CONTENT.HSG.CO.A.4

Name a segment parallel to segment AC

• segment DE
• segment DB
• segment AC
• segment BC

Tags

CCSS.MATH.CONTENT.HSG.CO.C.10

What is the definition of perpendicular lines?

• Two lines that intersect at a 45-degree angle.

• Two lines that intersect at a 180-degree angle.

• Two lines that intersect at a right angle.

• Two lines that never intersect.

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CCSS.MATH.CONTENT.HSG.CO.C.10

Which of the following statements is true about perpendicular lines?

• Perpendicular lines are parallel to each other.

• Perpendicular lines intersect at a 90-degree angle.

• Perpendicular lines never intersect.

• Perpendicular lines intersect at a 45-degree angle.

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CCSS.MATH.CONTENT.HSG.CO.A.4

True or False: Parallel lines are always perpendicular to each other.

• Not sure

• Sometimes

• True

• False

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CCSS.MATH.CONTENT.HSG.CO.A.4

If you were to plot the point (4, -12) what would be the correct method?

• Up 4, left 12
• Right 4, up 12
• Down 4, left 12
• Right 4, down 12

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CCSS.MATH.CONTENT.HSG.CO.A.4