Base — Grade 6 Math, what it means and where it is taught
Any side of a triangle, chosen as the one to measure from.
Taught in Grade 6 Math.
Where it is taught
What uses it later
This idea is needed for:
- Height — The perpendicular distance from the base to the opposite corner.
Practise this idea
8 questions in the course bank use Base, in Area of Triangles & Quadrilaterals.
Problem 1
Find the area of a triangle with base 10 and height 6.
Worked answer
30
12 × 10 × 6 = 30
Problem 2
Find the area of a triangle with base 7 and height 4.
Worked answer
14
14
Problem 3
Find the area of a parallelogram with base 8 and height 5.
Worked answer
40
8 × 5 = 40
Problem 4
A triangle has base 6 and equal sides 5. Its height is 4. Find the area.
Worked answer
12
12 × 6 × 4 = 12
Problem 5
A triangle has area 24 and base 8. Find its height.
Worked answer
6
12 × 8 × h = 24
4h = 24, so h = 6
Problem 6
A shape is a 6 by 4 rectangle with a triangle of base 6 and height 3 on top. Find the total area.
Worked answer
33
24 + 9 = 33
Problem 7
A parallelogram has area 56 and height 7. Find its base.
Worked answer
8
b = 8
Problem 8
Find the area of a triangle with base 4.5 and height 8.
Worked answer
18
12 × 4.5 × 8 = 18