2D Shapes: Properties and Characteristics
Properties of 2D Shapes
Take a look at some of the language used to describe the properties
of 2-dimensional (2D) shapes below:
curved
longer
v
sides
straight
shorter
2-dimensional
equal
vertex/vertices
symmetry
length
Guess my shape
Click on the sound
buttons and then
click the arrow on
your keyboard or
touch the screen to
reveal the shape.
Our Learning
Click on the speaker to hear
your task for today
Miss Adams
circle
1 curved side
0 vertices
infinite lines of
symmetry
Sum of interior
angle is 360°
no pairs of parallel
lines
How many curved
sides?
How many vertices?
How many lines of
symmetry?
What do all the
interior angles
measure?
How many pairs of
parallel lines?
triangle
3 straight sides
3 vertices
up to 3 lines of
symmetry
3 interior angles
no pairs of parallel
lines
How many straight
sides?
How many vertices?
How many lines of
symmetry?
How many interior
angles?
How many pairs of
parallel lines?
3 acute angles
What type of angles
can you see in this
shape?
square
4 straight sides
4 equal length sides
4 vertices
4 lines of symmetry
4 interior angles
4 right angles
How many straight
sides?
How many vertices?
How many lines of
symmetry?
How many interior
angles?
What type of angles
can you see in this
shape?
What does each
interior angle
measure?
How many pairs of
parallel lines?
How many pairs of
perpendicular lines?
each interior angle
is 90°
4 pairs of
perpendicular lines
2 pairs of parallel
lines
trapezium
4 straight sides
2 equal length sides
4 vertices
1 line of symmetry
4 interior angles
2 acute angles
2 obtuse angles
How many
straight sides?
How many vertices?
How many lines of
symmetry?
How many interior
angles?
What type of angles
can you see in this
shape?
How many pairs of
parallel lines?
1 pair of parallel
lines
rectangle
4 straight sides
2 long sides
2 short sides
4 vertices
2 lines of symmetry
4 interior angles
4 right angles
How many straight
sides?
How many vertices?
How many lines of
symmetry?
How many interior
angles?
What type of angles
can you see in this
shape?
What does each
interior angle
measure?
How many pairs of
parallel lines?
How many pairs of
perpendicular lines?
each interior angle
is 90°
4 pairs of
perpendicular lines
2 pairs of parallel
lines
rhombus
4 straight sides
4 equal length sides
4 vertices
2 lines of symmetry
4 interior angles
2 acute angles
2 obtuse angles
How many straight
sides?
How many vertices?
How many lines of
symmetry?
How many interior
angles?
What type of angles
can you see in this
shape?
How many pairs of
interior angles?
How many pairs of
parallel lines?
2 pairs of interior
angles
2 pairs of parallel
lines
regular pentagon
5 straight sides
5 vertices
5 lines of symmetry
5 interior angles
5 obtuse angles
How many
straight sides?
How many vertices?
How many lines of
symmetry?
How many interior
angles?
What type of angles
can you see in this
shape?
How many pairs of
parallel lines?
0 pairs of
parallel lines
regular hexagon
6 straight sides
6 vertices
6 lines of symmetry
6 interior angles
How many
straight sides?
How many vertices?
How many lines of
symmetry?
How many interior
angles?
What type of angles
can you see in this
shape?
How many pairs of
parallel lines?
6 obtuse angles
3 pairs of
parallel lines
regular heptagon
7 straight sides
7 vertices
7 lines of symmetry
7 interior angles
How many
straight sides?
How many vertices?
How many lines of
symmetry?
How many interior
angles?
What type of angles
can you see in this
shape?
How many pairs of
parallel lines?
7 obtuse angles
0 pairs of
parallel lines
regular octagon
8 straight sides
8 vertices
8 lines of symmetry
8 interior angles
How many
straight sides?
How many vertices?
How many lines of
symmetry?
How many interior
angles?
What type of angles
can you see in this
shape?
How many pairs of
parallel lines?
8 obtuse angles
4 pairs of
parallel lines
regular nonagon
9 straight sides
9 vertices
9 lines of symmetry
9 interior angles
How many
straight sides?
How many vertices?
How many lines of
symmetry?
How many interior
angles?
What type of angles
can you see in this
shape?
How many pairs of
parallel lines?
9 obtuse angles
0 pairs of
parallel lines
regular decagon
10 straight sides
10 vertices
10 lines of
symmetry
10 interior angles
How many
straight sides?
How many vertices?
How many lines of
symmetry?
How many interior
angles?
What type of angles
can you see in this
shape?
How many pairs of
parallel lines?
10 obtuse angles
5 pairs of
parallel lines
Explore the properties of various 2D shapes like circles, triangles, squares, trapeziums, and rectangles in terms of sides, vertices, symmetry, angles, and parallel lines. Understand the unique features of each shape to identify and differentiate them effectively.
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Presentation Transcript
Properties of 2D Shapes Take a look at some of the language used to describe the properties of 2-dimensional (2D) shapes below: v curved longer sides straight shorter 2-dimensional equal vertex/vertices symmetry length
Guess my shape Click on the sound buttons and then click the arrow on your keyboard or touch the screen to reveal the shape.
Our Learning Click on the speaker to hear your task for today Miss Adams Name of shape Drawing of shape Number of sides Number of Vertices
circle How many curved sides? 1 curved side How many vertices? 0 vertices How many lines of symmetry? infinite lines of symmetry What do all the interior angles measure? Sum of interior angle is 360 How many pairs of parallel lines? no pairs of parallel lines
triangle How many straight sides? 3 straight sides How many vertices? 3 vertices How many lines of symmetry? up to 3 lines of symmetry How many interior angles? 3 interior angles What type of angles can you see in this shape? 3 acute angles How many pairs of parallel lines? no pairs of parallel lines
square How many straight sides? 4 straight sides 4 equal length sides How many vertices? 4 vertices How many lines of symmetry? 4 lines of symmetry 90 90 How many interior angles? 4 interior angles What does each interior angle measure? each interior angle is 90 What type of angles can you see in this shape? 4 right angles 90 90 How many pairs of parallel lines? 2 pairs of parallel lines How many pairs of perpendicular lines? 4 pairs of perpendicular lines
trapezium How many straight sides? 4 straight sides 2 equal length sides How many vertices? 4 vertices How many lines of symmetry? 1 line of symmetry How many interior angles? 4 interior angles What type of angles can you see in this shape? 2 acute angles 2 obtuse angles How many pairs of parallel lines? 1 pair of parallel lines
rectangle 4 straight sides 2 long sides 2 short sides How many straight sides? How many vertices? 4 vertices 90 90 How many lines of symmetry? 2 lines of symmetry How many interior angles? 4 interior angles What does each interior angle measure? each interior angle is 90 What type of angles can you see in this shape? 4 right angles 90 90 How many pairs of parallel lines? 2 pairs of parallel lines How many pairs of perpendicular lines? 4 pairs of perpendicular lines
rhombus 4 straight sides 4 equal length sides How many straight sides? How many vertices? 4 vertices How many lines of symmetry? 2 lines of symmetry How many interior angles? 4 interior angles How many pairs of interior angles? 2 pairs of interior angles What type of angles can you see in this shape? 2 acute angles 2 obtuse angles How many pairs of parallel lines? 2 pairs of parallel lines
regular pentagon How many straight sides? 5 straight sides How many vertices? 5 vertices How many lines of symmetry? 5 lines of symmetry How many interior angles? 5 interior angles What type of angles can you see in this shape? 5 obtuse angles How many pairs of parallel lines? 0 pairs of parallel lines
regular hexagon How many straight sides? 6 straight sides How many vertices? 6 vertices How many lines of symmetry? 6 lines of symmetry How many interior angles? 6 interior angles What type of angles can you see in this shape? 6 obtuse angles How many pairs of parallel lines? 3 pairs of parallel lines
regular heptagon How many straight sides? 7 straight sides How many vertices? 7 vertices How many lines of symmetry? 7 lines of symmetry How many interior angles? 7 interior angles What type of angles can you see in this shape? 7 obtuse angles How many pairs of parallel lines? 0 pairs of parallel lines
regular octagon How many straight sides? 8 straight sides How many vertices? 8 vertices How many lines of symmetry? 8 lines of symmetry How many interior angles? 8 interior angles What type of angles can you see in this shape? 8 obtuse angles How many pairs of parallel lines? 4 pairs of parallel lines
regular nonagon How many straight sides? 9 straight sides How many vertices? 9 vertices How many lines of symmetry? 9 lines of symmetry How many interior angles? 9 interior angles What type of angles can you see in this shape? 9 obtuse angles How many pairs of parallel lines? 0 pairs of parallel lines
regular decagon How many straight sides? 10 straight sides How many vertices? 10 vertices How many lines of symmetry? 10 lines of symmetry How many interior angles? 10 interior angles What type of angles can you see in this shape? 10 obtuse angles How many pairs of parallel lines? 5 pairs of parallel lines
