| A gaily coloured hat hung from one of the boats, and over each floated a red flag shaped like an isosceles triangle. |
| The particular tablet which interests us here investigates how to calculate the radius of a circle through the vertices of an isosceles triangle. |
| Turn the page over to see the back and mark the middle of each of the two sides of the isosceles triangle by folding them carefully. |
| But that distribution of power — call it an isosceles triangle, or a pyramid — is just one of several possible arrangements. |
| Having done that, he gave it the job of proving that the base angles of an isosceles triangle are equal. |
| The youth informed the examiner that the first of the lot was an isosceles triangle. |
