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#### Resources tagged with Angles - points, lines and parallel lines similar to Estimating Angles:

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### There are 40 results

Broad Topics > Angles, Polygons, and Geometrical Proof > Angles - points, lines and parallel lines

### Estimating Angles

##### Age 7 to 14 Challenge Level:

How good are you at estimating angles?

### Dotty Circle

##### Age 7 to 11 Challenge Level:

Watch this film carefully. Can you find a general rule for explaining when the dot will be this same distance from the horizontal axis?

### Take the Right Angle

##### Age 7 to 11 Challenge Level:

How many times in twelve hours do the hands of a clock form a right angle? Use the interactivity to check your answers.

### Right Angles

##### Age 11 to 14 Challenge Level:

Can you make a right-angled triangle on this peg-board by joining up three points round the edge?

### Semi-regular Tessellations

##### Age 11 to 16 Challenge Level:

Semi-regular tessellations combine two or more different regular polygons to fill the plane. Can you find all the semi-regular tessellations?

### On Time

##### Age 11 to 14 Challenge Level:

On a clock the three hands - the second, minute and hour hands - are on the same axis. How often in a 24 hour day will the second hand be parallel to either of the two other hands?

### Triangles in Circles

##### Age 11 to 14 Challenge Level:

Can you find triangles on a 9-point circle? Can you work out their angles?

### Tessellating Hexagons

##### Age 11 to 14 Challenge Level:

Which hexagons tessellate?

### Right Time

##### Age 11 to 14 Challenge Level:

At the time of writing the hour and minute hands of my clock are at right angles. How long will it be before they are at right angles again?

### Polygon Rings

##### Age 11 to 14 Challenge Level:

Join pentagons together edge to edge. Will they form a ring?

### Subtended Angles

##### Age 11 to 14 Challenge Level:

What is the relationship between the angle at the centre and the angles at the circumference, for angles which stand on the same arc? Can you prove it?

### Which Solids Can We Make?

##### Age 11 to 14 Challenge Level:

Interior angles can help us to work out which polygons will tessellate. Can we use similar ideas to predict which polygons combine to create semi-regular solids?

### Olympic Turns

##### Age 7 to 11 Challenge Level:

This task looks at the different turns involved in different Olympic sports as a way of exploring the mathematics of turns and angles.

### Being Resilient - Primary Geometry

##### Age 5 to 11 Challenge Level:

Geometry problems at primary level that may require resilience.

### Being Resourceful - Primary Geometry

##### Age 5 to 11 Challenge Level:

Geometry problems at primary level that require careful consideration.

### Being Collaborative - Primary Geometry

##### Age 5 to 11 Challenge Level:

Geometry problems for primary learners to work on with others.

### Being Curious - Primary Geometry

##### Age 5 to 11 Challenge Level:

Geometry problems for inquiring primary learners.

### Dotty Relationship

##### Age 7 to 11 Challenge Level:

Can you draw perpendicular lines without using a protractor? Investigate how this is possible.

### Sweeping Hands

##### Age 7 to 11 Challenge Level:

Use your knowledge of angles to work out how many degrees the hour and minute hands of a clock travel through in different amounts of time.

### Angles Inside

##### Age 11 to 14 Challenge Level:

Draw some angles inside a rectangle. What do you notice? Can you prove it?

### Overlapping Squares

##### Age 7 to 11 Challenge Level:

Have a good look at these images. Can you describe what is happening? There are plenty more images like this on NRICH's Exploring Squares CD.

### How Safe Are You?

##### Age 7 to 11 Challenge Level:

How much do you have to turn these dials by in order to unlock the safes?

### Six Places to Visit

##### Age 7 to 11 Challenge Level:

Can you describe the journey to each of the six places on these maps? How would you turn at each junction?

### Cylinder Cutting

##### Age 7 to 11 Challenge Level:

An activity for high-attaining learners which involves making a new cylinder from a cardboard tube.

### Same Length

##### Age 11 to 16 Challenge Level:

Construct two equilateral triangles on a straight line. There are two lengths that look the same - can you prove it?

### Pythagoras

##### Age 7 to 14

Pythagoras of Samos was a Greek philosopher who lived from about 580 BC to about 500 BC. Find out about the important developments he made in mathematics, astronomy, and the theory of music.

### Shogi Shapes

##### Age 11 to 14 Challenge Level:

Shogi tiles can form interesting shapes and patterns... I wonder whether they fit together to make a ring?

### Making Maths: Clinometer

##### Age 11 to 14 Challenge Level:

Make a clinometer and use it to help you estimate the heights of tall objects.

### Watch the Clock

##### Age 7 to 11 Challenge Level:

During the third hour after midnight the hands on a clock point in the same direction (so one hand is over the top of the other). At what time, to the nearest second, does this happen?

### LOGO Challenge 7 - More Stars and Squares

##### Age 11 to 16 Challenge Level:

Can you use LOGO to create a systematic reproduction of a basic design? An introduction to variables in a familiar setting.

### Maurits Cornelius Escher

##### Age 7 to 14

Have you ever noticed how mathematical ideas are often used in patterns that we see all around us? This article describes the life of Escher who was a passionate believer that maths and art can be. . . .

### Making Maths: Equilateral Triangle Folding

##### Age 7 to 14 Challenge Level:

Make an equilateral triangle by folding paper and use it to make patterns of your own.

### Robotic Rotations

##### Age 11 to 16 Challenge Level:

How did the the rotation robot make these patterns?

### Witch's Hat

##### Age 11 to 16 Challenge Level:

What shapes should Elly cut out to make a witch's hat? How can she make a taller hat?

### Clock Hands

##### Age 7 to 11 Challenge Level:

This investigation explores using different shapes as the hands of the clock. What things occur as the the hands move.

### Round and Round and Round

##### Age 11 to 14 Challenge Level:

Where will the point stop after it has turned through 30 000 degrees? I took out my calculator and typed 30 000 ÷ 360. How did this help?

### LOGO Challenge 8 - Rhombi

##### Age 7 to 16 Challenge Level:

Explore patterns based on a rhombus. How can you enlarge the pattern - or explode it?

### Angle Measurement: an Opportunity for Equity

##### Age 11 to 16

Suggestions for worthwhile mathematical activity on the subject of angle measurement for all pupils.

### LOGO Challenge 1 - Star Square

##### Age 7 to 16 Challenge Level:

Can you use LOGO to create this star pattern made from squares. Only basic LOGO knowledge needed.

### Interacting with the Geometry of the Circle

##### Age 5 to 16

Jennifer Piggott and Charlie Gilderdale describe a free interactive circular geoboard environment that can lead learners to pose mathematical questions.