Angles and Lines

Question 1

What do all of the angles of a line add up to?

Answer 1

180

Question 2

What do all the angles around a point add up to?

Answer 2

360

Question 3

What is the rule with vertically oposite angles?

Answer 3

They are the same.

Question 4

How do corresponding angles look and what is its rule?

Answer 4

The angles are the same

Question 5

How do alternating angles look and what is the rule?

Answer 5

The angles are the same

Question 6

How do CO-interior angles look and what is its rule?

Answer 6

Both angles add up to 180 degrees

Question 7

What are the two properties of triangles?

Answer 7

1. The angles = 180 degrees
2. The exterior angle is the same as the two oposite interior angles.

Question 8

What is the order of rotational symmetry and lines of symmetry of a rectangle?

Answer 8

• 2 lines of symmetry
• Rotational symmetry of 2

Question 9

What is the order of rotational symmetry and lines of symmetry of a square?

Answer 9

• 4 lines of symmetry
• Rotational symmetry of 4

Question 10

What is the order of rotational symmetry and lines of symmetry of a parallelogram and how does one look?

Answer 10

* Rotational symmetry 2 * No lines of symmetry

Question 11

What is the order of rotational symmetry and lines of symmetry of a kite?

Answer 11

• One line of symmetry
• No rotational symmetry

Question 12

What is the order of rotational symmetry and lines of symmetry of a rhombus and how does it look?

Answer 12

* 2 sides of rotational symmetry * 2 lines of symmetry Note: a tilted square

Question 13

What is the order of rotational symmetry and lines of symmetry of a trapezium and how does it look?

Answer 13

* No lines of symmetry. * No rotational symmetry.

Question 14

What is the defenition of a regular polygon?

Answer 14

A regular polygon is a shape with 3 or more equal sides.

Question 15

How do you find the sum of the sum of the interior angles in a polygon?

Answer 15

I = (n - 2) x 180
n = #sides
I = sum of all interior angles

Question 16

What is the sum of all exterior angles?

Answer 16

180n - I (sum of inetrior angles)

Question 17

What are the two equations for exterior angles?

Answer 17

E = 180n - I
I + E = 180n

Question 18

What are the 3 rules for bearings?

Answer 18

1. Always measure the angle starting from north
2. Always measure angle clockwise
3. Always write bearings using 3 digits

Question 19

What is the equation of pythagoras?

Answer 19

C^2 = a^2 + b^2

Question 20

What is the relationship between the enlargment and area of enlargment?

Answer 20

n = n^2

Question 21

What is the relationship between the enlargment and volume of enlargment?

Answer 21

n = n^3

Question 22

What are the cherectaristics of an isosceles triangle

Answer 22

2 sides are the same length

Question 23

What are the charectaristics of scalene triangles?

Answer 23

A triangle whose all 3 sides have different lengths, and all three angles are of different measures.