S1 (1.4) Angles.notebook February 22, 2017

Daily Practice 10.1.2017

Q1. Round 81.55 to 1 decimal place

Q2. 24 x 6000

Q3. ‐3 + 11

Q4. 3.45 + 1.67

Q5. 248 ÷ 100 Q6. 52 x 63

Today we will be learning about types of angles.

Types of Angles

Acute ObtuseReflex

2510

10

1810530

170

Angles

State which type of angle each of these are:

1210

510

1010

410

210710 1110

920

1850

350

2850 1580

3000

1670

Daily Practice 11.1.2017

Q1. 32 + 24 Q5. 5.4 ‐ 2.23 

Q2. 360 ÷ 5 

Q3. ‐5 + 16

Q4. Round 71.228 to 2 decimal places

Today we will be learning how to draw and label an angle.

S1 (1.4) Angles.notebook February 22, 2017

Naming Angles

Angles are named using 3 letters.

The middle letter is always where the angle is located.

Examples:

1. 2. 3. A

BC

X

Y Z

P Q

R S

A

BC

E F

G

H

I

J

K

N

P

Q

R

ST

X

O PY

Z

Name the following anglesand saywhat type ofthey are

Naming Angles(i) (ii) (iii)

(iv)

(v) (vi)

(vii)

Daily Practice 12.1.2017

Q1. 67 x 5

Q2. -7 - 14

Q3. 3.5 x 100

Q4. 580 ÷ 100 Q5. 3 - 2 x 4

Today we will be learning how to name & draw angles.

Drawing Angles

0 180

10 170

20160

30

15040

14050

13060

120

70

110

80

100

90

90

0°

100

80

110

70

120

60

130

50

140

40

150

30

16020

17010

1800

Drawing Angles

0 180

10 170

20160

30

15040

14050

13060

120

70

110

80

100

90

90

0°

100

80

110

70

120

60

130

50

140

40

150

30

16020

17010

1800

S1 (1.4) Angles.notebook February 22, 2017

Drawing Angles

Draw the following angles:

(a) 450 (b) 1000 (c) 700 (d) 240

(e) 1340 (f) 100 (g) 180 (h) 1550

Measuring Angles

Write down the sizes of the following angles.

0

18010

17020

16030

150

40

140

50

130

60

120

70

110

80

100

90

90

27°

100

80

110

70

120

60

13050

14040

15030

16020

17010

180

0

Daily Practice 13.1.2017

Q1. 238 ‐ 149

Q2. 92 ÷ 5

Q3. ‐8 + 16

Q4. (3 x 4) ‐ (2 x 12)

Q5. What type of angle is an angle of 1240?

Today we will be continuing to practise drawing and measuring angles.

Measuring Angles

0 180

10170

20160

30

15040

14050

13060

120

70

110

80

100

90

90

3°

100

80

110

70

120

60

130

50

140

40

150

30

16020

17010

1800

Daily Practice 17.1.2017

Q1. Round 18.25 to 1 decimal place

Q2. (-3) x (-4)

Q3. 3.45 x 100

Q4. 24 x 20

Q5. 38.2 - 22.56

S1 (1.4) Angles.notebook February 22, 2017

Today we will be learning how to measure angles.

Homework Online due Tuesday 24.1.2017

Daily Practice 18.1.2017

Q1. Round 17.255 to 2 decimal places

Q2. -12 ÷ 4

Q3. What type of angle is 2200?

Q4. 17 x 50 Q5. 49 ÷ 100

Today we will be learning to find supplementary and complementary angles.

Homework Online due 24.1.2017

Complementary Angles

These are angles that add together to get 900

Examples: Find the value of each of the letters

(i) (ii) (iii)

b0b0 b0

480

a0

170

a0

380 740

b0 510

c0

320 320

d0

Daily Practice 19.1.2017

Q1. Round 1480 to the nearest hundred

Q2. -15 ÷ -3

Q3. 54.5 x 100

Q4. 6 x 5 - 3 Q5. What type of angle is 170?

Homework due Tuesday 24.1.2016

S1 (1.4) Angles.notebook February 22, 2017

Today we will be learning about supplementary angles.

Supplementary Angles

These are angles that add together to get 1800

Examples: Find the value of each of the letters below

(i) (ii) (iii)

1450 a0 c0b0

400 340400

a0

560 850

b0

720

c0

480

d0

360

e0 f0 g0

h0

440 1130 270

Supplementary AnglesDaily Practice 20.1.17

Q1. 16 - 19

Q2. Round 19.29 to the nearest unit

Q3. 716 + 282

Q4. 56.5 ÷ 100 Q5. (-7) x (-3)

Today we will be continuing to learn how to find missing angles.

Homework due 24.1.2017

Wipeboards!

S1 (1.4) Angles.notebook February 22, 2017

Daily Practice 24.1.2017

Q1. Round 22.4758 to 1 decimal place

Q2. (‐3) x 6

Q3. 220 ÷ 1000

Q4. 67.11 + 23.9

Q5. 75 x 30

Today we will be continuing to learn how to find missing angles.

Homework due today!

Leave your jotter here at the end of the period.

Finding Missing Angles

125˚ 105˚

?

Calculate the missing angles

80˚130˚

?

Daily Practice 25.1.2017

Q1. 4 ­ 15

Q2. 12 ÷ 6 + 2

Q3. 56.77 x 100

Q4. What size is the missing angle?

Q5. Round 171.224 to 1 decimal place

?480

Today we will be learning about F and Z angles.

F Angles (Corresponding Angles) & Z Angles (Alternate Angles)

First we will draw a pair of parallel lines.

0180

10170

20160

30

15040

140 50

13060

120

70

110

80

100

90

90

180°

100

80

110

70

120

60

130

50

140

40

150

30

16020

170 10

180 0

S1 (1.4) Angles.notebook February 22, 2017

F Angles (Corresponding Angles) & Z Angles (Alternate Angles)

0 180

10 170

20160

30

15040

14050

13060

120

70

110

80

100

90

90

0°

100

80

110

70

120

60

130

50

140

40

150

30

16020

17010

1800

Z Angles (Alternate Angles)

First we will draw a pair of parallel lines.

F and Z angles

We can use our knowledge of F and Z angles to find angles that are the same size.

Example: Write down the values of the missing angles

590

Daily Practice 26.1.2017

Q1. Round 29.7 to the nearest unit

Q2. (-2) x (-4)

Q3. 34.1 + 13.87

Q4. What type of angle is 780 ?

Q5. 67 x 4

F Angles (Corresponding Angles)

These are angles that are equal when a line cuts through a pair of parallel lines.

0

180

10

170

20

160

30

150

40

140

50

130

60

120

70110

80100

9090 90°

10080

11070

120

60130

50 140

40150

30

160

20

170

10

180

0

S1 (1.4) Angles.notebook February 22, 2017

Daily Practice 27.1.2017

Q1. 3.66 x 100

Q2. -14 + 18

Q3. What type of angle is 1800?

Q4. 43 + 55 + 81

Q5. 36 ÷ 5

Today we will be learning about angles in a triangle.

Missing angles in trianglesThe angles in a triangle add together to make 1800

Examples: Calculate the missing angles

1. 2. 3.

1130

270

?

840430430

??

Daily Practice 31.1.2017

20 Questions Mental Maths

S1 (1.4) Angles.notebook February 22, 2017

Today we will be completing a check up on angles.