Angles - points, lines and parallel lines

problem

Dotty Circle

Age

7 to 11

Challenge level

3 out of 3

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

Cylinder Cutting

Age

7 to 11

Challenge level

3 out of 3

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

Logo Challenge 1 - Star Square

Age

7 to 16

Challenge level

1 out of 3

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

Logo Challenge 8 - Rhombi

Age

7 to 16

Challenge level

1 out of 3

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

Shogi Shapes

Age

11 to 14

Challenge level

1 out of 3

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

Isosceles Meld

Age

11 to 14

Challenge level

1 out of 3

Weekly Problem 9 - 2012
What is the angle QPT in this diagram?
problem

Angular Reflection

Age

11 to 14

Challenge level

1 out of 3

Weekly Problem 28 - 2013
Two lines meet at a point. Another line through this point is reflected in both of these lines. What is the angle between the image lines?
problem

Robo-Turn

Age

11 to 14

Challenge level

1 out of 3

Weekly Problem 16 - 2007
Can you figure out how far the robot has travelled by the time it is first facing due East?
problem

Half Past Two

Age

11 to 14

Challenge level

1 out of 3

Weekly Problem 21 - 2009
What is the angle between the two hands of a clock at 2.30?
problem

Two Exterior Triangles

Age

11 to 14

Challenge level

1 out of 3

Weekly Problem 35 - 2009
Two equilateral triangles have been drawn on two adjacent sides of a square. What is the angle between the triangles?