Points, Line Segments, Lines and Rays
How would you describe a line segment to someone who had never seen it before?
Straight and has a beginning and an end
What do you call a shape with three sides and angles?
Triangle
What is a closed figure with 3 or more straight sides?
Polygon
Name two properties of a polygon.
-Closed figure
-2-dimensional
-No crossing
-Straight line segments
Draw a picture of a concave pentagon.
Draw ray XY.
What do you call a shape with four sides and angles?
Quadrangle and/or quadrilateral
What does a right angle look like?
90 degrees (looks like the corner of a paper)
What do you call two lines that do not intersect?
Parallel lines
List the possible names of figure D.
Line segment AB and line segment BA
Draw right angle ABC.
What do you call a shape with two sets of congruent sides but no parallel lines?
Kite
Describe figure A. Be as specific as you can.
-Four sides
-Opposite sides are parallel and congruent
-All right angles
-Rectangle
Does a triangle have any parallel lines?
No
What is an 8 sided polygon called?
Octagon
Draw line DE parallel to line FG.
What do you call a quadrangle with four sides all the same length?
Square and/or a rhombus
Describe figure B. Be as specific as you can.
-Three sides
-All congruent sides
-All congruent angles
-Equilateral, acute triangle
A parallelogram is a quadrangle with 2 pairs of parallel lines. Name at lease two examples of a parallelogram.
Squares, rectangles, and rhombuses
Draw a picture of four concentric circles.
Draw line segment JK perpendicular to line segment LM.
What do you call a quadrangle with two sides one length, and two sides another length, all parallel, all 90 degree angles?
Rectangle
Describe figure C. Be as specific as you can.
-Four sides
-One set of congruent sides
-One set of parallel sides
-Trapezoid
Define and/or draw a kite.
A parallelogram with two sets of congruent sides. It is not a parallelogram.
Draw a polygon that is congruent to figure C.