Classifying Two-Dimensional Shapes

How many perpendicular lines does it have?

How many perpendicular lines does it have?

What type of angles does it have?

• obtuse angles

• acute angles

• right angles

• obtuse and acute angles

How many perpendicular lines does it have?

Ruth sorted polygons into groups. The polygons shown belong in the same group. Which description best represents this group?

• Polygons with perpendicular lines only

• Polygons with obtuse angles only

• Polygons with acute and obtuse angles

• Polygons with perpendicular and parallel lines

Four figures are shown. Which figures appear to be rectangles?

• Figures Q and S

• Figures P and Q

• Figures R and S

• Figures P and R

Which figure cannot have parallel line segments?

• triangle

• square

• pentagon

• trapezoid

Liza drew a figure on the front of her notebook that has two obtuse angles. Which figure could be the one Liza drew?

• Parallelogram

• rectangle

• obtuse triangle

• acute triangle

What attributes do shapes C and D have in common?

• They each have 4 sides

• They each have exactly 1 pair of parallel sides

• They each have 2 pairs of parallel sides

• They each have 4 sides and have 2 parallel sides

• They each have 4 sides and exactly 1 pair of parallel sides

What attributes do shapes A, B, E and F have in common?

• They each have 4 sides

• They each have exactly 1 pair of parallel sides

• They each have 2 pairs of parallel sides

• They each have 4 sides and have 2 parallel sides

• They each have 4 sides and exactly 1 pair of parallel sides