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Of three-sided figures, an equilateral triangle is that which has three equal sides.
Mensuration of lines, areas, surfaces, and volumes - Page xiv
by Robert Rawson - 1856

## Euclid's Elements of plane geometry [book 1-6] explicitly enunciated, by J ...

Euclides - 1860 - 288 pages
...straight lines. 25. Multilateral figures, or polygons, are contained by more than four straight lines. 26. Of three-sided figures, an equilateral triangle is that which has three equal sides, as E. 27. An isosceles triangle is that which has only two sides equal, as L 28. A scalene triangle...

## The school Euclid: comprising the first four books, by A.K. Isbister

Euclides - 1862 - 172 pages
...figures, or triangles, by three straight lines. XXII. Quadrilateral, by four straight lines. XXIII. Multilateral figures, or polygons, by more than four...scalene triangle, is that which has three unequal sides. XXVIL A right-angled triangle, is that which has a right angle XXVIII. An obtuse-angled triangle,...

## Euclid's Elements of geometry, books i. ii. iii. iv

Euclides - 1862 - 140 pages
...by four straight lines. 23. Multilateral figures, or polygons, by more than four straight lines. 24. Of three-sided figures an equilateral triangle is that which has three equal sides. 25. An isosceles triangle is that which has only two sides equal. 26. A scalene triangle is that which...

## The elements of plane geometry; or, The first six books of Euclid, ed. by W ...

Euclides - 1863 - 122 pages
...straight lines. XXIII. Multilateral figures, or polygons, by more than four straight lines. XXIV. A Of three-sided figures, an equilateral triangle is that / \ which has three equal sides. L—A equal. —* XXV. A An isosceles triangle is that which has only two sides / \ sides. / I XXVI....

## Euclid's Elements of geometry, the first four books, by R. Potts. Corrected ...

Euclides - 1864 - 262 pages
...figures, or triangles, by three straight lines. XXII. Quadrilateral, by four straight lines. XXIII. Multilateral figures, or polygons, by more than four...sides. XXV. An isosceles triangle is that which has two sides equal. XXVI. A scalene triangle is that which has three unequal sides. XXVII. A right-angled...

## The school edition. Euclid's Elements of geometry, the first six books, by R ...

Euclides - 1864 - 448 pages
...figures, or triangles, by three straight lines. XXII. Quadrilateral, by four straight lines. XXIII. Multilateral figures, or polygons, by more than four...sides. XXV. An isosceles triangle is that which has two sides equal. XXVI. A scalene triangle is that which has three unequal sides. XXVII. A right-angled...

## The College Euclid: Comprising the First Six and the Parts of the Eleventh ...

Euclides - 1865 - 402 pages
...figures, or triangles, by three straight lines. XXII. Quadrilateral, by four straight lines. XXIII. Multilateral figures, or polygons, by more than four...scalene triangle, is that which has three unequal sides. XXVIL A right-angled triangle, is that which has a right angle. XXVIII. An obtuse-angled triangle,...

## Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson ...

Robert Potts - 1865 - 528 pages
...four straight lines. xxrn. Multilateral figures, or polygons, by more than four straight lines. XXTV. Of three-sided figures, an equilateral triangle is...sides. XXV. An isosceles triangle is that which has two sides equal. XXVI. A scalene triangle is that which has three unequal sides. xxvn. A right-angled...