Classifying Triangles
Classifying Quadrilaterals
parallel and
perpendicular
perpendicular
symmetry
potpurri
100
Classify the triangle by angle
Right Triangle
100
What quadrilaterals have four 90 degree angles in them?
Rectangles and squares
100
What is a parallel line?
Two straight lines that will never touch. They are equally distant from each other.
l l =
100
Does the figure have line symmetry?
Yes
100
Draw the figure:
Line BC
<-------->
BC
200
Classify the triangle by angles
acute triangle
200
which of following names apply to this shape:
Triangle, quadrilateral, square, rectangle, trapezoid, rhombus, and parallelogram.
Quadrilateral, rectangle, parallelogram
200
How many pairs of of parallel lines does this figure have?
One pair of parallel lines
200
What is line symmetry?
If you can reflect (or flip) a figure over a line and the figure appears unchanged, then the figure has reflection symmetry or line symmetry.
200
draw the figure:
Ray GH
-------->
GH
300
Classify the triangle by sides
Isosceles Triangle
300
which of following names apply to this shape:
Triangle, quadrilateral, square, rectangle, trapezoid, rhombus, and parallelogram.
quadrilateral, rhombus, parallelogram
300
How many pairs of parallel lines does this shape have?
Zero sets of parallel lines
300
Does this shape have line symmetry?
no
300
Draw the figure:
Line Segment XY
___
XY
400
Classify the triangle by sides and angle
Angle: Acute triangle
Sides: Isosceles triangle
400
Which of the following quadrilaterals could have angles that are not 90 degrees?
square, rectangle, trapezoid, rhombus, and parallelogram.
trapezoid, rhombus and parallelogram.
400
What is a perpendicular line?
Two lines that intersect, or meet to form a 90 degree angle.
L
400
Solve for X
right angle =90
90-62=28 degrees500
Classify by side and angle
Side: Equilateral triangle
Angle: Acute triangle
500
What quadrilateral only has one set of parallel sides?
Trapezoid
500
Does this shape have perpendicular lines?
yes
500
Does this figure have line symmetry?
NO
500
Solve for B
Straight angle =180
180-(30 + 50)=100 degrees