Parts of Lines Types of Lines Angles and Triangles Quadrilaterals
10
point
What is an exact location that is represented by a dot called?

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10
intersecting lines
What are lines that meet or cross each other called?

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10
right angle
What type of angle measures exactly 90*

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10
rectangle
This shape has opposite sides that are equal in length and parallel. It has 4 right angles.

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20
ray
What has one endpoint and extends in the opposite direction without stopping?

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20
parallel lines
What are lines that are always the same distance apart, without ever meeting or touching, called?

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20
Obtuse triangle
What kind of triangle has at least one side measuring greater than 90*?

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20
trapezoid
This shape has exactly one pair of parallel sides.

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30
endpoint
What is the point at either end of a line segment or the point at the beginning of a ray.

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30
perpendicular lines
What are lines that meet or cross each other to form square corners (90* angles) called?
30
Acute angle
What type of angle measures less than 90*?

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30
parallelogram
This shape has opposite sides that are equal in length and parallel. It's opposite angles are the same size

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40
line segment
What is a part of a line between two endpoints?

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40
Line of Symmetry
What type of line can a figure be folded so that its two halves match exactly?

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40
Obtuse angle
What type of angle measures more than 90*, but less than 180*?
40
square
This shape has opposite sides equal in length and parallel. It has 4 right angles and 4 equal sides.

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50
line
What is a set of straight points that extends in the opposite direction without stopping?

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50
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50
Acute triangle
What type of triangle has three angles measuring less than 90*?

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50
rhombus
This shape has opposite sides that are equal in length and parallel. It has 4 equal sides.

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Geometry

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