Explain the difference between an equilateral, an isosceles, and a scalene triangle.

An equilateral triangle has 3 equal sides, an isosceles triangle has 2 equal sides, and a scalene triangle has no equal sides.

Can a triangle have more than one obtuse angle? Explain why or why not.

No, a triangle cannot have more than one obtuse angle because the sum of all angles in a triangle must equal 180 degrees.

Name: Sorting Triangles and Quadrilaterals
Author: Insta~Lesson

4th Grade · Math · 45 min

I can sort triangles and quadrilaterals by their attributes.

1
Triangles are polygons that always have 3 sides and 3 angles.
2
Triangles can be classified by their sides and by their angles.
3
The three classifications for triangles based on their sides are: equilateral, isosceles, and scalene.

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