299
Projection law for A trangle
298
A geometric shape for A triangle is inscribed in a circle
297
A triangle with inscribed circle for proving r=4Rsin(A/2)sin(B/2)sin(C/2)
296
Three perpendiculars to tangents and chord of a circle with auxiliary lines
295
Three perpendiculars to tangents and chord of a circle
294
A trangle 12-18-25 with semicircle and dashed radii
293
A trangle with a tangent semicircle
292
A right trangle with a rotating angle and auxiliary segment
291
A right triangle 6-8-10 with a rotating angle
290
A right trangle with the lengths of the 2 legs 24 and 32
289
Find the distance from DD to plane BEC
287
A regular Nonagon geometric shape
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