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

A squareB rhombusC rectangleD pentagon

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

A isoscelesB equilateralC scaleneD right

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

A Every rectangle is a square.B Every square is a rectangle.C Every rhombus is a rectangle.D Every trapezoid is a square.

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

A acute triangleB right triangleC obtuse triangleD equilateral triangle

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

A Region A, only the rhombus circleB Region B, in both circlesC Region C, only the rectangle circleD Region D, outside both circles

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

A Opposite sides are parallel.B All sides are equal.C All angles are right angles.D Exactly one pair of parallel sides.

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

A trapezoidB rhombusC triangleD pentagon

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

A isoscelesB equilateralC rightD scalene

No two sides are equal, so it is scalene.

A squareB rectangleC triangleD rhombus

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

A equilateral triangleB scalene triangleC right triangleD obtuse triangle

All three sides are equal, so it is equilateral.