Question

In a triangle $ABC$,$AD,BE,CF$ are the altitudes and $R$ is the circumradius,then find the radius of the circle $DEF.$

score 656 · Answer 1 · 2026-04-17 04:08:00

656

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In a triangle $ABC$,$AD,BE,CF$ are the altitudes and $R$ is the circumradius,then find the radius of the circle $DEF.$

Published on 17 Apr 2026 - 4:08

score 145 · Answer 2 · 2026-04-08 16:45:20

145

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What does a triangle become?

Published on 08 Apr 2026 - 16:45

score 328 · Answer 3 · 2026-04-16 20:40:03

328

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score 16.3k · Answer 4 · 2026-04-09 05:47:24

16.3k

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score 424 · Answer 5 · 2026-04-16 12:45:50

424

Views

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score 1.4k · Answer 6 · 2026-04-13 19:06:04

1.4k

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score 2.4k · Answer 7 · 2026-04-13 08:55:45

2.4k

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score 162 · Answer 8 · 2026-03-31 22:44:39

162

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55

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135

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score 1.4k · Answer 12 · 2026-03-29 16:33:57

1.4k

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score 1.7k · Answer 13 · 2026-04-12 17:11:26

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score 51 · Answer 14 · 2026-04-15 12:16:31

51

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Published on 15 Apr 2026 - 12:16

score 242 · Answer 15 · 2016-01-19 01:07:39

242

Views

Prove that $m_a(bc-a^2)+m_b(ac-b^2)+m_c(ab-c^2) \geq 0.$

Published on 19 Jan 2016 - 1:07

List Question

In a triangle $ABC$,$AD,BE,CF$ are the altitudes and $R$ is the circumradius,then find the radius of the circle $DEF.$

What does a triangle become?

Common meeting point for 3 points to reach 4th point

How can an angle be negative?

Show that the perimeter of an octagon is $8(\sqrt{2} -1)$

Area of Triangle in ellipse

How would I solve for the bases of an isosceles without the height?

Placing Pandas in a Triangle Pen

Determine vertex coordinates of a triangle if length and angles of opposite are known

Problem finding coordinates in a earth like coordination system

Prove that angles are equal using complex numbers

angles in rhombus when an equilateral triangle is inscribed in it

Coordinates of circumcentre of an isosceles triangle in 3D

Catalog of triangles

Prove that $m_a(bc-a^2)+m_b(ac-b^2)+m_c(ab-c^2) \geq 0.$

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