# Y4 Maths task- Thursday 30th April

Good morning everyone.

Well done for your work on symmetry over the last two days.

Today we are moving on to angles and lines.

Do you know any technical names for angles or lines already? ….

**Parallel line**– these lines run **next to each other** like train tracks and will **never meet**.

**Perpendicular lines**– these lines will eventually **meet at a point**.

**Right angles**– a right angle measures at **90 degrees**. It looks like an L shape and is found in squares and rectangles.

**Obtuse angles**– angles that are **bigger than 90 degrees but smaller than 180 degrees **(a straight line)

**acute angles**– angles that are** smaller than 90 degrees **(I always remember that it is a cute, little baby angle!)

**reflex angles**– normally measured on the outside of a shape, these angles are** bigger than 180 degrees**

All of these are on a sheet linked below for you to refer to.

I would like you to classify the lines and angles highlighted on the shapes using the information above.

I have loaded the sheet in two formats as I know some of you were struggling to access.

Comment your answers.

Line and angle classification Lines and angles

1.

right angle

parallel

2.

acute angle

perpendicular

3.

acute angle

parallel

4.

right angle

perpendicular

5.

acute angle

parallel

6.

reflex angle

parallel

1.

Right angle

Parallel line

2.

Acute angle

Perpendicular line

3.

Obtuse angle

Parallel line

4.

Right angle

Perpendicular line

5.

Acute angle

Parallel line

6.

Reflex angle

Parallel line

Shapes

1

Right angle

Parallel line

2

Acute angle

Perpendicular lines

3

Obtuse angle

Parallel lines

4

Right angle

perpendicular lines

5

Acute angle

Parallel lines

6

Reflex angle

Perpendicular line

1. Right angle, Parallel.

2. Acute angle, Perpendicular.

3. Obtuse angle, Parallel.

4. Right angle, Perpendicular.

5. Acute angle, Parallel.

6. Obtuse angle, Perpendicular.

1.

right angle

parallel line

2.

acute angle

perpendicular lines

3.

obtuse angle

parallel llines

4.

right angle

perpendicular lines

5.

acute angle

parallel lines

6.

reflex angle

perpendicular lines

1. Right angle and Parallel Lines

2. Acute angle and Perpendicular Lines

3. Obtuse angle and Parallel Lines

4. Right angle and Perpendicular Lines

5. Acute angle and Parallel Lines

6. Obtuse angle and Perpendicular Lines

1) right angle ,parallel line

2) acute angle ,perpendicular line

3) obtuse angle ,parallel line

4) right angle ,perpendicular line

5) acute angle ,parallel line

6) reflex angle ,perpendicular line (^^)