Lines
This is a part of a line that starts and ends at a point.
What is a line segment?
These angles are less than 90 degrees.
What are acute angles?
This is a triangle with three acute angles.
What is an acute triangle?
This is a parallelogram that is both a rectangle and a rhombus.
What is a square?
This is a polygon with three sides.
What is a triangle?
This is a part of a line that starts at a point and extends infinitely in one direction.
What is a ray?
These angles are between 90 and 180 degrees.
What are obtuse angles?
This is a triangle with two acute angles and one right angle.
What is a right triangle?
This is a parallelogram that has four right angles.
What is a rectangle?
This is a polygon with four sides.
What is a quadrilateral?
This is how we describe two lines that cross each other at 90 degree angles.
What are perpendicular lines?
These angles are exactly 90 degrees.
What are right angles?
This is a triangle that has all equal side lengths.
What is an equilateral triangle?
This is a quadrilateral with two pairs of parallel lines.
What is a parallelogram?
This is a polygon with eight sides.
What is an octagon?
This is how we describe two lines on the same plane that never cross each other.
What are parallel lines?
These are two angles that add up to 180 degrees.
What are supplementary angles?
This is a triangle with only two congruent sides.
What is an isosceles triangle?
This is a parallelogram with all congruent sides
What is a rhombus?
This is a polygon with six sides.
What is a hexagon?
This is how we describe two lines that cross each other.
What are intersecting lines?
These are two angles that add up to 90 degrees.
What are complimentary angles?
This is a triangle that has all different side lengths.
What is a scalene triangle?
This is a quadrilateral with only one pair of parallel lines.
What is a trapezoid?
This is a polygon with five sides.
What is a pentagon?