Question

Mr. Miller's classroom has desks shaped like

equilateral triangles. He is planning to arrange
the desks for a lunch for 10 people. If one
person can sit at each edge of each desk, make
a sketch to show how many desks he needs.
Drag shapes to make the sketch.

Answer 1

Explanation:

Please have a look at the attached photo (sorry for my bad drawing, I just wanted to make you understand)

Way 1: Mr. Miller can arrange the desk in one row to make a long lunch table

=> We need need 8 desks for this way

Way 2: Mr. Miller can arrange the desk in two rows to make a long lunch table

=> We need need 14 desks for this way