Building shapes from triangles (Part 2)
Slide deck
Download slide deck
Lesson details
Key learning points
- In this lesson, we will learn how to arrange triangles to form polygons as part of an investigation into the internal angles of polygons. This represents part 2 of a two-part lesson.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
Video
Share with pupils
Loading...
5 Questions
Q1.
Each angle in an equilateral triangle is...
180 degrees
6 degrees
90 degrees
Q2.
Which of the following statements most accurately describes an 'acute angle'?
An angle that is 90 degrees
An angle that is between 90-180 degrees
An angle that is greater than 180 degrees
Q3.
The total interior angles in a quadrilateral sum to...
180 degrees
45 degrees
90 degrees
Q4.
If I wanted to describe a regular triangle, it would be better to say which of the following?
Equal triangle
Isosceles triangle
Scalene triangle
Q5.
If you were to have 6 separate equilateral triangles , what would the total interior angles of all the triangles sum to?
10,800 degrees
180 degrees
60 degrees
5 Questions
Q1.
ABCD forms a quadrilateral. What are the total interior angles of the quadrilateral?
180 degrees
36 degrees
90 degrees
Q2.
Angle ABC is 98 degrees. What would the size of the reflex angle formed be on the exterior?
2 degrees
360 degrees
82 degrees
Q3.
If I combined two equilateral triangles together with a shared side, what would the shape formed be called?
Equilateral triangle
Rectangle
Square
Q4.
Which of the following is not a rule used so far for angles?
Angles on a straight line sum to 180 degrees
Interior angles in a triangle sum to 180 degrees
Q5.
If A + B + C = 180, D + E = 180 and F is a right angle, what does A + B + C + D + E + F equal?
180 degrees
360 degrees
540 degrees