Triangles
A closed plane figure formed by 3 or more line segments that meet at points called vertices
Polygon
This polygon has 4 sides, 4 angles and 4 vertices
Quadrilateral
Two sides of the triangle are the same length
Isosceles Triangle
This quadrilateral is a special parallelogram with 4 congruent sides and 2 pairs of parallel lines
Rhombus
Polyhedron with only ONE base
Pyramid
One angle of the triangle is obtuse. The other two angles are acute
Obtuse Triangle
This quadrilateral as AT LEAST one pair of parallel lines
Trapezoid
Figures that have the same size and shape
Congruent
A ____________ is sometimes a rhombus.
-parallelogram, rhombus or square
parallelogram
This angle measures less than 90 degrees
Acute Angle
This angle measures more than 90 degrees
Obtuse Angle
This quadrilaterals has 2 pairs of parallel lines and opposite sides are congruent
Parallelogram
All sides of the triangle are different lengths
Scalene Triangle
A _________ is always a rectangle.
-parallelogram or square
Square
Polygons that connect with the bases
Lateral Faces
All sides of the triangle have the same length
Equilateral Triangle
This quadrilateral has 4 right angles and 2 pairs of PERPENDICULAR sides and 2 pairs of parallel lines
Rectangle
This angle measures exactly 90 degrees
Right Angle
This shape is NOT a polyhedron and has no bases and 1 curved surface.
Sphere
Polyhedron that has TWO polygons as bases
Prism
One angle of the triangle is right. The other two angles are acute
Right Triangle
This quadrilateral has 4 congruent sides, 4 right angles and 2 pairs of parallel lines
Square
All three angles of the triangle are acute
Acute Triangle
This shape is NOT a polyhedron and has two same sized circular bases and one curved surface.
Cylinder
Three dimensional figures with faces that are polygons
Polyhedron