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Year 8 Maths > Angles > Flashcards

Angles Flashcards

1
Q

What angle is this:

————c-/———-
/
/
———–/c———–

A

Alternate angle

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2
Q

What angle is this:

               /c --------------/------------
           /
         / --------/c----------------
A

Corresponding angle

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2
Q

Angles around a point sum to…

A

360 degrees

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3
Q

What angle is this:

—————-/c——–
/
/
/
———/–c————–

A

Co-interior angle

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4
Q

Angles on a straight line sum to…

A

180 degrees

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5
Q

Vertically opposite angles are…

A

Equal

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6
Q

Alternate angles are…

A

Equal

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7
Q

Corresponding angles are…

A

Equal

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8
Q

Co-interior angles sum to…

A

180 degrees

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9
Q

Opposite angles of a parallelogram are…

A

Equal

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10
Q

Angles in a triangle sum to…

A

180 degrees

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11
Q

Base angles of an isosceles triangle are…

A

Equal

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12
Q

The exterior angle of a triangle equals the sum of…

A

The two opposite interior angles

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13
Q

What is the formula to calculate the sum of the interior angles of an n sided polygon?

A

180(n-2)

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14
Q

What is the formula to calculate an interior angle of an n sided polygon?

A

180(n-2) divided by n

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15
Q

The sum of the exterior angles of a shape sum to…

A

360 degrees

16
Q

How would you calculate an exterior angle of an n sided shape?

A

360/n

17
Q

How would you calculate an interior angle in a shape?

A

180 - Exterior Angle

18
Q

What is a regular polygon?

A

A shape that consists of straight sides that all join at a vertex and have at least three sides.

19
Q

What are the main three shapes that tesselate?

A

Triangle, square and hexagon

20
Q

For a shape to tesselate, it must…

A

Have interior angles that are a factor of 360 e.g. triangle= 60. 60x6=360

21
Q

How would you calculate how many sides a regular polygon has based on its exterior angle?

A

Its exterior angle (one) must be divisible by 360

e.g. exterior of hexagon = 60

360/60= 6

Year 8 Maths (1 decks)

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