Geometry Flashcards

1
Q

What is a point? (3)

A

A precise location or place on a plane. Usually represented by a dot. And indicated with capital letters.

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2
Q

What is a line?

A
  • A line does not have an endpoint.

* It stretches infinitely in tow directions.

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3
Q

What do the arrows on a line indicate?

A

The line continues

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4
Q

How do we name a line?

A

We name or indicate a line using two points on the line.

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5
Q

What is a line segment?

A

A line segment is only part of the line. It has a starting point and an end point.

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6
Q

What is a ray?

A

A ray only has one starting point but continue infinitely in one direction.

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7
Q

What is a flat surface?

A

A flat area which is never ending in all directions. We can also call this a plane.

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8
Q

What are parallel lines? And what else do they have?

A

Distinct lines that lay in the same plane and never intersect each other. Their own slope.

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9
Q

What is a perpendicular line?

A

A perpendicular line is a line that intersects at right angles.

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10
Q

How many lines are required for intersection?

A

Two or more

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11
Q

The common point where all lines meet is called the ______ of _______.

A

Point

Intersection

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12
Q

All intersecting lines form_____ at the point of intersection.

A

Angles

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13
Q

What formula must you remember when measuring angles? And what does it stand for?

A

ROLI

Right Outside Left Inside

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14
Q

Acute angle is….

A

Less than 90 degrees

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15
Q

A right angle is….

A

= to 90 degrees

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16
Q

An obtuse angle is between…..

A

90 degrees and 180 degrees

17
Q

A straight line angle is….

A

180 degrees

18
Q

A reflex angle is….

A

Greater than 180

19
Q

A complete turn is….

A

360 degrees

20
Q

Why do we minus from 360 degrees?

A

We minus from 360 because that is how much a full revolution is. And we measure the inside of the angle and minus it by 360 and we get our answer for the out of the angle.

21
Q

If lines cross we say they____.

A

Intersect