Try solving this with pure Euclid!

Geometry Level 4

Consider isosceles ABC\triangle ABC with A=20\measuredangle A=20^{\circ} and AB=ACAB=AC. Now consider point DD on ACAC such that AD=BCAD=BC. What is the measure of BDC\angle BDC?

(Please don't use trigonometry!)

×

Problem Loading...

Note Loading...

Set Loading...