Comparing & classifying isosceles and scalene triangles
Comparing & classifying isosceles and scalene triangles
These resources will be removed by end of Summer Term 2025.
Switch to our new teaching resources now - designed by teachers and leading subject experts, and tested in classrooms.
Lesson details
Key learning points
- In this lesson, we will compare different triangles and introduce isosceles and scalene triangles.
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.
Loading...
6 Questions
Q1.
Which properties do all triangles have?
2 sides and 3 vertices
3 sides and 2 vertices
4 sides and 4 vertices
Q2.
What is the name given to a regular triangle?
Regularity
Right angled triangle
Trapezium
Q3.
Which of the statements best describe an equilateral triangle?
1 angle equal to 90 degrees
2 angles equal to 180 degrees
3 sides with different measurements
Q4.
Which statement best describes a right angled triangle
3 angles that measure exactly the same
A triangle with a width of 10cm
A triangle with three 60 degree angles
Q5.
It is possible to create a large equilateral triangle from either...
2 or 4 smaller equilateral triangles
3 or 5 smaller equilateral triangles
6 or 9 smaller equilateral triangles
Q6.
If a triangle has the angles: 60 degrees and 30 degrees, what is the 3rd angle?
180 degrees
30 degrees
60 degrees
5 Questions
Q1.
What is the name given to a triangle with 3 equal sides?
Right angled triangle
Scalene triangle
Trapezium
Q2.
What is the name given to a triangle which has the following three angles: 80°, 40° and 60° ?
Equilateral triangle
Isosceles triangle
Right angled triangle
Q3.
If a triangle has the angles of 90° and 60°, what is the third angle?
180°
40°
90°
Q4.
Which of these are NOT interior angles of a triangle?
60°, 60° and 60°
70° , 70° and 40°
Q5.
A right angled triangle can also be ...
a scalene or an equilateral triangle
an equilateral triangle
an isosceles or an equilateral triangle