Draw and Identify Geometric Elements - 4th Grade Math
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What does it mean for two lines to be parallel?
What does it mean for two lines to be parallel?
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They are always the same distance apart and never intersect. Like railroad tracks that run side by side forever.
They are always the same distance apart and never intersect. Like railroad tracks that run side by side forever.
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What symbol shows that two lines are perpendicular?
What symbol shows that two lines are perpendicular?
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$\perp$. Looks like an upside-down T showing the right angle.
$\perp$. Looks like an upside-down T showing the right angle.
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What does it mean for two lines to be perpendicular?
What does it mean for two lines to be perpendicular?
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They intersect to form right angles ($90^\circ$). The $90^\circ$ angles create perfect corners.
They intersect to form right angles ($90^\circ$). The $90^\circ$ angles create perfect corners.
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What is the vertex of an angle?
What is the vertex of an angle?
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The common endpoint where the $2$ rays of an angle meet. Named from Latin meaning "highest point" or corner.
The common endpoint where the $2$ rays of an angle meet. Named from Latin meaning "highest point" or corner.
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Identify the angle type: an angle measures $35^\circ$.
Identify the angle type: an angle measures $35^\circ$.
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Acute angle. $35^\circ < 90^\circ$, so it's acute.
Acute angle. $35^\circ < 90^\circ$, so it's acute.
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What is a point in geometry?
What is a point in geometry?
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An exact location with no size; named by a capital letter (for example, $A$). Points mark positions but have no dimensions.
An exact location with no size; named by a capital letter (for example, $A$). Points mark positions but have no dimensions.
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Identify the angle type: an angle measures $120^\circ$.
Identify the angle type: an angle measures $120^\circ$.
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Obtuse angle. $120^\circ > 90^\circ$, so it's obtuse.
Obtuse angle. $120^\circ > 90^\circ$, so it's obtuse.
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What is a line segment in geometry?
What is a line segment in geometry?
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Part of a line with $2$ endpoints. Segments are finite portions of lines with definite length.
Part of a line with $2$ endpoints. Segments are finite portions of lines with definite length.
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Identify the relationship: two lines meet and form a $90^\circ$ corner.
Identify the relationship: two lines meet and form a $90^\circ$ corner.
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Perpendicular lines. A $90^\circ$ corner indicates perpendicular intersection.
Perpendicular lines. A $90^\circ$ corner indicates perpendicular intersection.
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What symbol shows that two lines are parallel?
What symbol shows that two lines are parallel?
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$\parallel$. Two vertical lines represent the parallel relationship.
$\parallel$. Two vertical lines represent the parallel relationship.
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What is an obtuse angle in degrees?
What is an obtuse angle in degrees?
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An angle measuring more than $90^\circ$ and less than $180^\circ$. "Obtuse" means blunt; these are wider than right angles.
An angle measuring more than $90^\circ$ and less than $180^\circ$. "Obtuse" means blunt; these are wider than right angles.
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Identify the angle type: an angle measures $90^\circ$.
Identify the angle type: an angle measures $90^\circ$.
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Right angle. Exactly $90^\circ$ makes it a right angle.
Right angle. Exactly $90^\circ$ makes it a right angle.
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Which figure has one endpoint: line, ray, or line segment?
Which figure has one endpoint: line, ray, or line segment?
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Ray. It starts somewhere but never ends.
Ray. It starts somewhere but never ends.
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Which figure has two endpoints: line, ray, or line segment?
Which figure has two endpoints: line, ray, or line segment?
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Line segment. It's the only figure bounded on both sides.
Line segment. It's the only figure bounded on both sides.
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Which figure has no endpoints: line, ray, or line segment?
Which figure has no endpoints: line, ray, or line segment?
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Line. It extends infinitely in both directions.
Line. It extends infinitely in both directions.
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What is a right angle measured in degrees?
What is a right angle measured in degrees?
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$90^\circ$. Forms a perfect corner or square angle.
$90^\circ$. Forms a perfect corner or square angle.
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Identify the angle type for a measure of $35^\circ$.
Identify the angle type for a measure of $35^\circ$.
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Acute angle. Any angle less than $90^\circ$ is acute.
Acute angle. Any angle less than $90^\circ$ is acute.
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Identify the angle type for a measure of $90^\circ$.
Identify the angle type for a measure of $90^\circ$.
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Right angle. Exactly $90^\circ$ makes it a right angle.
Right angle. Exactly $90^\circ$ makes it a right angle.
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Identify the angle type for a measure of $120^\circ$.
Identify the angle type for a measure of $120^\circ$.
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Obtuse angle. Greater than $90^\circ$ but less than $180^\circ$ means obtuse.
Obtuse angle. Greater than $90^\circ$ but less than $180^\circ$ means obtuse.
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Which angle type has a measure less than $90^\circ$?
Which angle type has a measure less than $90^\circ$?
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Acute angle. Think "acute" means sharp or small.
Acute angle. Think "acute" means sharp or small.
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