A geometry problem by Ajay Sambhriya

Geometry Level 2

Two congruent circles with centers at point O and P are tangent at Point A.
also, OC and PB are tangents on the corresponding circles intersecting at a point D. Find the measure of the angle BDC

110° 120° 90° 100°

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1 solution

Ajay Sambhriya
Oct 8, 2017

Explanation for the angles of 30 and 60: since C is 90 degrees and the short side is r and the hypothenuse is 2r, we have a 30-60-90 triangles.

Peter van der Linden - 3 years, 8 months ago

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