Categorizing 2D Figures

Look at the picture. What is NOT true about the polygon?

• four congruent sides

• opposite sides are congruent

• two pairs of perpendicular lines

• opposite sides are parallel

A closed figure with at least 3 sides, where all sides are straight (no curves) is a ___________.

• quadrilateral

• triangle

• square

• polygon

Opposite sides are parallel; all sides are equal; each angle is a right angle 

• Rectangle

• Square

• Cube

• Quadrilateral

Look at picture. Which figures have all congruent sides?

• A and B

• B and C

• A and C

• B and D

I have eight sides, angles, and vertices. What am I?

• quadrilateral

• pentagon

• octagon

• heptagon

Classify the triangle.

• equilateral

• scalene

• acute

• isosceles

Classify the triangle.

• acute

• equilateral

• right

• obtuse

How would you classify the triangle?

• acute, isosceles

• acute, equilateral

• obtuse, isosceles

• right, scalene

Classify the triangle based on the information given.

Sides: 28 mm, 42 mm, 12 mm

Angles: 30 degrees, 125 degrees, 25 degrees

• obtuse, isosceles

• obtuse, scalene

• right, scalene

• acute, isosceles

• A
• B
• C
• D