- Both are triangles (3 sides, 3 angles)
- Both have 3 sides and 3 vertices
- Both are closed figures
- Both have straight lines (no curves)
- Both are 2D shapes
- Both have interior angles that sum to 180 degrees
- Both can be classified by their angles (acute, right, obtuse)
- Both can be classified by their side lengths (scalene, isosceles, equilateral)
- Left triangle: all sides equal (3.5 in), so it is equilateral and equiangular
- Left triangle: all angles are acute (60° each)
- Right triangle: sides are different lengths (2.5 in, 4 in, 4.7 in), so it is scalene
- Right triangle: has one right angle (90°)
- Right triangle: has two acute angles
- Left triangle: all angles are equal
- Right triangle: no sides are equal
- Left triangle: all sides are equal
- Right triangle: has a right angle, left does not
- Left triangle: is equilateral, right is scalene
- Left triangle: is also equiangular, right is not
- Left triangle: no right angle, right triangle has one
Parent Tip: Review the logic above to help your child master the concept of math warm ups for 2nd grade.
