s1 (1.2) l3 angles.notebook september 24, 2015 - weebly · 2018. 9. 9. · s1 (1.2) l3...

S1 (1.2) L3 Angles.notebook September 24, 2015

Daily Practice 27.11.14

Q1. Round 81.55 to 1 decimal place

Q2. 32.144 x 50

Q3. 67.54 - 0.388

Q4. What type of angle is an angle of 1710?

Q5. 248 ÷ 400

Today we will be learning how to find missing

angles.

Angles

Types of angles:Revision of Angles

Finding missing angles examples:

1. 2.

o

Revision of AnglesDaily Practice 1.12.14

Q1) Round 234.25 to 1 decimal place

Q2) ‐15 ‐ (‐4)

Q3) 45.6 x 70

Q4) 0.002 x 0.6 Q5) 0.63 ÷ 0.07

Complete if finished

10

6

8 2


Today we will be continuing to learn

about angles.

Revision of Angles


1. 2.

71

Revision of Angles

Revision of Angles


1. 2. 3.

o

oo

o

o

o o

o

o

Revision of Angles

Daily Practice 3.12.14Questions in

context

Q1. The school is planning a field trip, there are 305 students

going and 43 seats on each bus. How many buses are needed to

take the trip?

Q3. There is room in a multi-story

car park for 17 rows of 30 cars on

each of 4 floors. How many cars

are there if the car park is full?

Q2. Bill had 77 sweets, he gave equal numbers of sweets to each of

his 8 friends, and then ate what was left. How many sweets did each

person eat?


Today we will be learning about alternate and

corresponding angles.

Parallel and Perpendicular lines

Parallel lines are lines that are always the same distance apart and

never meet.

Perpendicular lines are lines that meet at right angles to each other.

E.g. The wall is perpendicular

to the floor

Alternate and Corresponding Angles

Angles that are alternating are equal (Z- angles)

Angles that are corresponding are also equal (F- angles)

Both of these can be identified if you have a pair of parallel lines and

another line cutting through them.


Example:

Calculate the missing angles

1530


Copy these diagrams and fill in the missing angles for each

480

a0

1300

b0

630

c0

d0

400

1050

Today we will be learning how to find missing angles

in triangles.


Missing angles in triangles

The angles in a triangle add together to make 1800

Examples: Calculate the missing angles

1. 2. 3.

1130

270

??

850

430

?

Q1. Find 25% of 7000

Q2. Calculate the size of x

Q3. How far does Ben drive if he drives at a speed of 100kmph for

1 hour and 45 minutes

Q4. Simplify the ratio 14:21

Q5. What number does P represent if 3 x P - 1 = 11 ?

310

x


Today we will be learning how to find external

and internal angles in polygons.

Homework due Wednesday

Angles in Polygons

A polygon is a closed 2D shape with straight sides.

External angleInternal angle




Q2. What type of angle is an angle of 2170 ?

Q3. Solve x - 1 = 9

Q4. Find 17% of 900

Q5. Find 5/6 of 330

Today we will be learning how to measure angles in a

clockface.

Homework Due

Angles in Polygons

Calculate the internal and external angles for each of these polygons

6

7 8

9 10 12

Angles in a clock face



Example:

Calculate the size of the smaller

angle between the hour and

minute hands when

the time is 4:00am/pm?


Example 2:

Calculate the size of the smaller

angle between the hour and

minute hands when

the time is 7.30am/pm?


Q1. What type of angle is 710 ?

Q2. 3 - 4 x 2


Q4. Write 0.6 as a fraction

Q5. 0.8 x 0.7


20 Questions Mental Maths

Today we will be doing a check-up on angles.



Q1. Round 89.66 to the nearest unit

Q2. -3 + 15

Q3. 2.4 x 300

Q4. 12 + (3 x 3)

Q5. What type of angle is 240 ?

s1 (1.2) l3 angles.notebook september 24, 2015 - weebly · 2018. 9. 9. · s1 (1.2) l3...

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