Investigating Mathematics with C.a.R.

Henrico County Public Schools

Construct a triangle using a vertex and two midpoints.

READ the instructions on the right and INTERACT with the C.a.R. applet below.

Investigation Steps

Given: Vertex A and the midpoints of AC, (Mc) and AB, (Mb), find vertices B and C of Δ ABC.


Hint: Construct two sides of the triangle first.
What part of a circle is double another part of the circle?