2D Shapes Review

Which of the following polygons is listed in order from least number of sides to greatest number of sides?

• pentagon, hexagon, triangle, nonagon, heptagon, quadrilateral

• triangle, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon

• triangle, quadrilateral, pentagon, heptagon, hexagon, octagon, nonagon

• triangle, quadrilateral, pentagon, hexagon, heptagon, octagon, dodecagon, nonagon

Identify the following figure. 

• Regular Polygon

• Irregular Polygon

• Irregular Heptagon

• 2D Shape

Complete the statement. 
A polygon's number of sides and number of angles are always ___________. 

• Parallel

• Perpindicular

• Equal

• More

Which shape has two sets of parallel sides, two sets of equal sides, and four 90-degree angles?

• Trapezoid

• Parallelogram

• Rhombus

• Rectangle

Complete the following statement.
Because a square is a rhombus, it must have ___________.

• 90- degree angles.

• All sides congruent. 

• Opposite sides parallel. 

• Acute angles. 

Which of the following is NOT true about polygons?

• They must be a closed shape.

• They can be made of line segments as well as curved lines.

• Lines cannot cross each other.

• It must be a two-dimensional shape.

Classify the triangle:

• Acute Scalene

• Right Scalene

• Obtuse Isosceles

• Obtuse Scalene

Which of the following statements is true?

• A triangle is a parallelogram.

• A rectangle is a square.

• A star is a pentagon.

• An equilateral triangle is an isosceles triangle. 

What shape is this?

• square

• trapezoid

• paralellogram

• circle

What shape is this?

• pentagon

• rectangle

• hexagon

• it's not a shape