Fundamentals of Plane Geometry

What is a line?

• a straight path of points that goes on and on in two directions

• an endless flat surface

• an exact location in space

• lines that never intersect

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CCSS.4.G.A.1

What are intersecting lines?

• Lines that never cross

• lines that from square corners

• lines that pass through the same point

• Lines that curve on an angle

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CCSS.HSG.CO.A.1

CCSS.4.G.A.1

What is a line segment?

• Part of a line with 2 endpoints

• Part of a line that has 1 endpoint

• Part of a line with 0 endpoints

• Part of a line with 5 endpoints

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CCSS.HSG.CO.A.1

What is a ray?

• Part of a line with 2 endpoints

• Part of a line with 1 end point and goes on forever 

• Part of a line with 0 endpoints

• Part of a line with 5 endpoints

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CCSS.4.G.A.1

What kind of intersecting lines are these?

• Parallel Lines

• Perpendicular Lines

• Right Lines

• Scalene Lines

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CCSS.HSG.CO.A.1

CCSS.4.G.A.1

What is a point?

• a straight path

• an exact location

• endless flat surface

• lines that cross

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CCSS.HSG.CO.A.1

What is a plane?

• lines that never intersect

• lines that pass through the same point

• an endless flat surface

• an exact location in space

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CCSS.HSG.CO.A.1

CCSS.4.G.A.1

What is a line segment?

• A geometric figure

• Part of a line with two endpoint

• A shared end point of the sides of a angle

• Two angles that are opposite of each other

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CCSS.HSG.CO.A.1

If m∠XOZ = 74°, find m∠XOY.

• 37°

• 74°

• 90°

• 148°

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CCSS.HSG.CO.C.9

What is m∠ABD

• 80

• 120

• 20

• 100

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CCSS.4.MD.C.7