5th Grade Classifying Two-Dimensional Figures Quiz: 10 Questions with Explanations

It has 4 right angles but the sides are not all equal, so it is a rectangle, not a square.

Two sides are equal (7 and 7), so it is isosceles. Right describes an angle, not the sides.

A square has all the properties of a rectangle. The reverse is false, since a 6 by 3 rectangle is not a square.

One angle (100°) is greater than 90°, so it is obtuse.

A square is a rhombus and a rectangle, so it belongs in the overlap, region B.

A parallelogram has two pairs of parallel sides. Equal sides and right angles are extra properties.

A rhombus is a parallelogram with 4 equal sides, and it leads to square just like rectangle does.

No two sides are equal, so it is scalene.

Four equal sides make a rhombus. A square would need 4 right angles.

All three sides are equal, so it is equilateral.