Subcategories

• Week 1

  Hexagon Area; Octagon Area; Round Area; Diagonal Area

  Day 1

  Day 2

  Day 3

  Day 4
  51
  Topics
  181
  Posts

  

  What is it you don't get?

• Week 2

  Trapezoid Lengths; Angles in Circles; Chord Distances; Cyclic Quadrilateral

  Day 5

  Day 6

  Day 7

  Day 8
  45
  Topics
  170
  Posts

  

  M2_D5_P3.jpg

  Hello,

  The question in Module 2 Day 5 Your Turn Part 3 doesn't tell us that BE is parallel to AF. How could we show that BE is parallel to AF instead of just assuming it based on picture ?

  Without knowing BE is parallel to AF, there is not enough information to solve this problem.

  Thanks

• Week 3

  Tangency; Tangent Angles; Common Tangents; Inscribed Circle

  Day 9

  Day 10

  Day 11

  Day 12
  38
  Topics
  114
  Posts

  

  Does anyone know the answer to this i can't figure it out

• Week 4

  Angle Bisector; Shortest Paths; Triangle Sides; Amazing Triangle Area

  Day 13

  Day 14

  Day 15

  Day 16
  36
  Topics
  106
  Posts

  B

  Module 2 Day 15 pic.jpg Before I learned Professor Loh's solution using combinatorics, I solved the problem by counting equilateral triangles (5), all the isosceles triangles (14), and then the triangles with unequal sides (3).