List questions from triangles

Published on 07 Aug 2014 - 5:40

79

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Triangle question, proving isosceles given trigonometric conditions

Published on 07 Aug 2014 - 9:19

1.4k

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For a triangle $ABC$, $a^2+b^2+c^2=8R^2$ then it is a right triangle?

Published on 07 Aug 2014 - 11:22

861

Views

Construction of an equilateral triangle from two equilateral triangles with a shared vertex

Published on 25 Mar 2026 - 19:02

1.4k

Views

How to find the area of an isosceles triangle without using trigonometry?

Published on 30 Mar 2026 - 12:27

2.3k

Views

Maximum Area of a Triangle when 1 Side, Perimeter Known

Published on 24 Feb 2026 - 3:48

165

Views

Sum of inradius of constructed triangle

Published on 11 Aug 2014 - 12:35

99

Views

isosceles and tight triangle

Published on 12 Aug 2014 - 16:36

142

Views

$S$, $I$, $O$ are circumcenter, incenter and orthocenter then $SO\ge IO \sqrt2$

Published on 13 Aug 2014 - 16:16

224

Views

Geometry, Mensuration

Published on 14 Aug 2014 - 5:29

81

Views

Translate line vertically and calculate intersection on circle

Published on 14 Aug 2014 - 20:11

84

Views

Do the medians (or other cevians) form all the triangles?

Published on 15 Aug 2014 - 6:01

72

Views

Find the value of $a$.

Published on 15 Aug 2014 - 18:32

945

Views

Ratio of Areas of Similar Triangles

Published on 19 Aug 2014 - 17:36

61

Views

Calculate PQ if AC = 20

Published on 20 Aug 2014 - 2:03

List Question

How prove that $|QA| < |QC|$ in triangle?

Triangle question, proving isosceles given trigonometric conditions

For a triangle $ABC$, $a^2+b^2+c^2=8R^2$ then it is a right triangle?

Construction of an equilateral triangle from two equilateral triangles with a shared vertex

How to find the area of an isosceles triangle without using trigonometry?

Maximum Area of a Triangle when 1 Side, Perimeter Known

Sum of inradius of constructed triangle

isosceles and tight triangle

$S$, $I$, $O$ are circumcenter, incenter and orthocenter then $SO\ge IO \sqrt2$

Geometry, Mensuration

Translate line vertically and calculate intersection on circle

Do the medians (or other cevians) form all the triangles?

Find the value of $a$.

Ratio of Areas of Similar Triangles

Calculate PQ if AC = 20

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