The figure shows a right triangle ABC with altitude BD.
Points O, O_{1}, and O_{2}, are the incenters of triangles ABC,ABD, and BDC. If the measure of angle OO_{2}O_{1} is 27 degrees, find the
measure of angle O_{1}O_{2}D.

Incircle is a circle within a triangle, that is tangent to each side. The incenter is the center of the triangle's incircle.

Geometry Problems

Open Problems

Visual Index

Ten problems: 1411-1420

All Problems

Right Triangle

Triangle

Altitude

Perpendicular lines

Incircle, Incenter

Circle

Circle Tangent Line

Triangle Centers

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