A polygon with four sides.
What is a quadrilateral?
An angle that has a measure less than a right angle.
What is an acute angle?
A triangle with no congruent sides.
What is a scalene triangle?
Name all the quadrilaterals that are parallelograms.
What are parallelograms are squares, rectangles and rhombuses?
Lines that cross.
What are intersecting lines?
Name all of the parallelograms that have two pairs of parallel sides.
What are squares, rhombuses, and rectangles?
Next to or adjoining something else.
What is adjacent?
A triangle that has a 90-degree angle.
What is a right triangle?
Name all of the quadrilaterals that have four equal sides.
What are rhombuses and squares?
A part of a line that includes two points, called endpoints, and all the points between them.
What is a line segment?
True or False? A rhombus is sometimes a rectangle.
What is false?
Which could be the name of a quadrilateral that has four equal sides with opposite equal acute and obtuse angles?
What is a rhombus?
A triangle with two equal sides and two equal angles.
What is an isosceles triangle?
What are the properties that both squares and rhombuses share?
What are four equal sides, two pairs of congruent opposite angles, the total sum of all angles is 360ยบ, and opposite sides are parallel?
Lines that never cross and are always the same distance apart.
What are parallel lines?
What is the difference between a regular polygon and an irregular polygon?
What are regular polygons that have sides that are equal and inside angles that are equal, and irregular polygons have sides and angles of any length and size?
An angle that has a measure greater than a right angle.
What is an obtuse angle?
A triangle that has a 90-degree angle.
What is a right triangle?
What are the properties that both squares and rectangles share?
What are opposite sides are parallel, opposite sides are congruent, and opposite angles are congruent?
A straight path extending in both directions with no endpoints.
What is a line?
What are the attributes of a trapezoid?
What are its base angles and diagonals are equal if the trapezoid is isosceles, opposite sides of an isosceles trapezoid are congruent?
An angle that forms a square corner.
What is a right angle?
A triangle that contains only angles that are less than 90 degrees.
What is an acute triangle?
Name all of the quadrilaterals that have four right angles.
What are rectangles and squares?
Two lines that intersect to form right angles.
What are perpendicular lines?