Search found 4 matches

by Holbi2004
Sun May 13, 2018 8:04 pm
Forum: Geometry
Topic: Prove triangle is isosceles
Replies: 0
Views: 3469

Prove triangle is isosceles

Let AE, BF and CG be the angle bisectors of triangle ABC. Let the points E, F and G lie on BC, AC and AB, respectively. Let M denote the incenter of ABC. Prove that if the sum of the areas of the inside triangles MCF, MAG and MBG equals half the area of triangle ABC, then ABC is isosceles. In otrher...
by Holbi2004
Thu May 03, 2018 4:01 pm
Forum: Combinatorics
Topic: Container Packing Problem
Replies: 5
Views: 2077

Re: Container Packing Problem

Thank you, smart approach - understood. But rather than working with a transition matrix (I´m grade 9 and haven´t heard of such thing) I would try to formulate a recursive formulation taking me step wise from layer to layer thereby differentiating between the possible protrusions of 0, 2 or 4 cuboid...
by Holbi2004
Wed May 02, 2018 3:38 pm
Forum: Combinatorics
Topic: Container Packing Problem
Replies: 5
Views: 2077

Re: Container Packing Problem

Appreciate your advice, thank you. Thus, I start in the first 2 x 2 layer of the 2 x 2 x 12 container. Some of the 2 x 1 x 1 elements will cross the first layer and protrude into the second layer. With 4 squares in the layer there are 4^2 = 16 possibilities for protrusions to the next layer. Conside...
by Holbi2004
Tue May 01, 2018 7:16 pm
Forum: Combinatorics
Topic: Container Packing Problem
Replies: 5
Views: 2077

Container Packing Problem

In how many different ways can 24 identical boxes (cuboids), each measuring 1 x 1 x 2 be packed into a single (cuboid) container measuring 2 x 2 x 12? This is a math problem from school to which I do not have a clue. I tried to define possible sub-arrangements of two 1 x 1 x 2 cuboids and tried find...