An isosceles triangle has two sides that are congruent (equal) in length. Even if the measurements were not labelled, you would still know it is an isosceles triangle. The tick marks confirm ...

Big Idea – We can describe, measure, and compare spatial relationships ... to highlight inclusive relations between triangles (e.g., recognizing equilateral triangles as special types of isosceles ...

This isosceles triangle matches with the perfect cohesiveness heap shape ... Closed system for safety requirements Measurement is intuitive, simple, and quick Repeatability of measurements is ...