# 1TTO CH4 Overview Lesson 6

Overview CH4
Lines and angles
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Slide 1: Slide
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This lesson contains 17 slides, with interactive quizzes and text slides.

Lesson duration is: 50 min

## Items in this lesson

Overview CH4
Lines and angles

#### Slide 1 -Slide

Parallel and Perpendicular
- You can draw lines that are parallel to each other, at a given distance or through a given point
- You can draw lines that are perpendicular to each other, through a given point.
- You can use signs in your drawing to indicate which lines are parallel and which lines are perpendicular
- You can read the symbols

#### Slide 2 -Slide

What does the symbol // mean?
A
parallel
B
perpendicular

#### Slide 3 -Quiz

Distance => the shortest!!!
- You can measure the distance from one line to another
- You can measure the distance between a point and a line
- You can draw a circle to find all points at the same distance from a given point
PERPENDICULAR!!

#### Slide 4 -Slide

What do you call the distance from the centre of a circle to the edge?

#### Slide 5 -Open question

Types of angles
- You know when an angle is a right, acute or obtuse angle
- You can read the symbols

#### Slide 6 -Slide

What does the symbol ° mean?

#### Slide 7 -Open question

Angle P = 73°
What type of angle is angle P?
A
right
B
acute
C
obtuse
D
not right, acute or obtuse

#### Slide 8 -Quiz

Angle Q = 200°
What type of angle is angle Q?
A
right
B
acute
C
obtuse
D
not right, acute or obtuse

#### Slide 9 -Quiz

Types of angles

right angle                       acute angle                                  obtuse angle
90°                                       between 0° and 90°                  between 90° and 180°
An angle that is between 180° and 360° is a reflex angle (but you dont have to know this (yet....).

#### Slide 10 -Slide

Working with angles
- You can measure the size of an angle
- You can draw an angle of a given size

#### Slide 11 -Slide

Diagonals
- You can draw the diagonals in a given figure
(

#### Slide 12 -Slide

Drawing figures
- You can use your knowledge of angles, parallel and perpendicular lines, diagonals and circles to draw figures with several given properties.

#### Slide 13 -Slide

Draw triangle KLM with:
KM = 2 cm,
First make a sketch!!
K=100°andM=55°

#### Slide 14 -Slide

Construct (compasses!)
Triangle ABC with AB=6.5 cm, AC=6cm and BC = 2.5 cm

Question?

Homework