| He described the island as having the form of an isosceles triangle, as may be seen upon the foregoing plan. |
| Having done that, he gave it the job of proving that the base angles of an isosceles triangle are equal. |
| First construct an isosceles triangle whose base angles are double the vertex angle. |
| A gaily coloured hat hung from one of the boats, and over each floated a red flag shaped like an isosceles triangle. |
| But that distribution of power — call it an isosceles triangle, or a pyramid — is just one of several possible arrangements. |
| He sold the kite, which looks like an isosceles triangle stretched at the top, for 25 cents. |
