Which line is perpendicular to a horizontal line?

How many lines of symmetry does an equilateral triangle have?

What is the term for an angle that measures exactly 90 degrees?

Which shape has exactly one pair of parallel sides?

What do you call a polygon that has all sides and angles equal?

What do you call two angles whose measures add up to 90 degrees?

Which of the following shapes has exactly four right angles?

What type of angle is larger than a right angle but smaller than a straight angle?

Which shape can be classified as having both pairs of opposite sides parallel?

What is the term for a polygon with four equal sides and four right angles?