Directional Words
2 lines that never intersect
What is parallel?
a polygon with 3 sides
what is a triangle?
exactly 90 degree angle
what is a right angle?
3 sides have different lengths
what is a scalene triangle?
Sides: 4cm, 4cm, 4cm, 4cm, 4cm
angles: 108, 108, 108, 108, 108,
what is a regular polygon pentagon?
corner to corner
what is diagonal?
a polygon with 5 sides
what is a pentagon?
less then 90 degrees
what is an acute angle?
two congruent sides
what is a isosceles triangle?
Sides: 3.5 cm. 6.2 cm 3.5 cm
angles: 27, 126, 27
What is isosceles obtuse triangle?
2 lines that intersect to form a right angle
what is perpendicular?
a polygon with 4 sides
what is a quadrilateral?
greater then 90 degrees
what is an obtuse angle?
3 congruent sides
what is an equilateral triangle?
sides: 2 in, 5 in, 3.8 in
angles: 43, 116, 21
what is a scalene obtuse triangle?
a point in the middle of a line segment
what is a midpoint?
a quadrilateral with opposite sides that are parallel
what is a parallelogram?
what is greater then 180 degrees?
what is a reflex angle
these are the ways to classify triangles by angle.
what is acute, right, and obtuse?
sides: 3cm, 5cm, 3cm, 5 cm, 7 cm
angles: 30, 30, 70, 70, 85
what is not a regular polygon pentagon
a point common to two sides of an angle
what is a vertex?
a quadrilateral with exactly one pair of parallel lines
what is a trapezoid?
exactly 180 degrees
what is a straight angle?
these are the ways to classify triangles by sides
what is scalene, isosceles, and equilateral?
these are other words to define a square?
What is rhombus, rectangle, parallelogram, and quadrilateral?