M213 Chapter 12 vocabulary Geometry/shapes

12.1 VOCABULARY/NOTATION

Square lattice 588

Line segment 588, 589

Triangle 588

Side 588

Quadrilateral 588

Angle 588, 589

Vertex (vertices) 588

Congruent line segments 588

Equilateral 588

Congruent angles 588

Right angle 589

Scalene triangle 589

Isosceles triangle 589

Equilateral triangle 589

Right triangle 589

Square 589

Rectangle 589

Parallelogram 589

Rhombus 589

Kite 589

Trapezoid 589

Isosceles trapezoid 589

Equiangular 590

SECTION 12.2 Analyzing ShapesVOCABULARY/NOTATION

Reflection symmetry 600

Line of axis symmetry 600

Base angles 602

Mira 602

Rotation symmetry 602

Diagonal 605

Simple closed curve 607

Polygon 607

Regular polygon 607

Regular n-gon 607

Convex 607

Concave 607

Vertex angle 608

Interior angle 608

Central angle 608

Exterior angle 608

Circle 608

Center 608

Radius 608

Diameter 608

Compass 608

SECTION 12.3 Properties of Geometric Shapes: Lines and AnglesVOCAB.

Plane 615

Point, A 615

LineAB, 615

Collinear points 615

Parallel lines, l _ m 615

Concurrent lines 615

Distance, AB 616

Coordinates 616

Between 616

Line segment, 616

Endpoints 616

Length 616

Midpoint 616

Equidistant 616

Ray, 616

Angle, ∠ABC 616

Vertex of an angle 616

Sides of an angle 616

Interior of an angle 617

Exterior of an angle 617

Adjacent angles 617

Protractor 617

Degrees 617

Measure of an angle, m(∠ABC) 617

Acute angle 617

Right angle 617

Obtuse angle 617

Straight angle 617

Reflex angle 617

Vertical angles 618

Supplementary angles 618

Perpendicular lines, l ⊥m 618

Complementary angles 618

Transversal 618

Corresponding angles 618

Alternate interior angles 619

Triangle, _ABC 619

Right triangle 620

Obtuse triangle 620

Acute triangle 620

SECTION 12.4 Regular Polygons and Tessellations

VOCABULARY/NOTATION

Regular polygon 628

Polygonal region 630

Tessellation 630

Regular tessellation 632

Vertex arrangement 632

Semiregular tessellation 633

SECTION 12.5 Describing Three-Dimensional Shapes

VOCABULARY/NOTATION

Dihedral angle 641

Faces of a dihedral angle 641

Skew lines 642

Polyhedron (polyhedra) 642

Convex polyhedron 643

Faces 643

Edges 643

Vertices 643

Prisms 643

Bases 643

Lateral faces 643

Right prism 643

Oblique prism 643

Pyramid 643

Apex of a pyramid 643

Right regular pyramid 644

Oblique regular pyramid 644

Regular polyhedron 644

Platonic solids 644

Euler’s formula 644

Semiregular polyhedron 645

Cylinder 645

Base of a cylinder 645

Right circular cylinder 645

Oblique cylinder 645

Cone 646

Apex of a cone 646

Base of a cone 646

Right circular cone 646

Oblique circular cone 646

Sphere 646

Center 646

Radius 646

Diameter 646