Question

blaise sorted shapes using the venn diagram below.
what characteristic is the same about all of the shapes in each circle but different from all of the other shapes not in that circle?
click each dot on the image to select an answer.
venn diagram with triangles omitted here
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Explanation:

Step1: Analyze Blue Circle

Shapes in blue circle (including overlap) have a right angle (marked by square corner). Shapes outside blue circle (red only, triangle above) don't have right angles. So blue circle's characteristic: right - angled triangles.

Step2: Analyze Red Circle

Shapes in red circle (including overlap) have two equal - length sides (marked by tick marks). Shapes outside red circle (blue only, triangle above) don't have two equal - length sides. So red circle's characteristic: isosceles triangles (two equal sides).

Answer:

Blue circle: Shapes have a right angle (right - angled triangles). Red circle: Shapes have two equal - length sides (isosceles triangles).