Download Magical Monday - teresajpeterson

1. Get out paper for your warm up
(Next Slide)
2. DEAR when you are finished
Warm Up-Solve for x
1.9x-7=-7  x=0
2.144= -12(x-5)  x= -17
3.x-1 = 5x+3x-8  x= 1
4.2(4x-3) -8 = 4+2x  x=3
Introduction to Geometry!!
 Polygon: Closed plane figure made up
by 3 or more line segments where no
lines can intersect.
Polygons!!
Not Polygons!!
Regular Polygon: All sides and all
angles are congruent.
Polygon
Triangle
# of
Polygon
Sides/Angles
3
Heptagon
# of
Sides/Angles
7
Quadrilateral
4
Octagon
8
Pentagon
5
Nonagon
9
Hexagon
6
Decagon
10
Any shape with larger than 10 sides, we will
call ____-gon
EX) 15 sides will be 15-gon
Triangles by Sides
1. Scalene: 0 sides congruent
2. Isosceles: 2 sides congruent
3. Equilateral: 3 sides congruent
Triangles by Angles
1. Acute: All angles are less than 90°
2. Obtuse: One angle is greater than 90°
3. Right: One angle equal to 90°
Quadrilaterals
Quad.
Quad.
Rhombus
Characteristics
4 congruent sides
Rectangle 4 right angles
Square
4 congruent sides
and 4 right angles
Trapezoid 1 pair of parallel
sides
Kite
2 pairs of
congruent adjacent
sides
Parallelogram
Characteristics
2 pairs of parallel
sides
Quadrilaterals
To Do:
 With your group, complete the back of
the note sheet.
 You have 15 minutes to complete these
problems.
Extension
 Create a Picture using AT LEAST (You may use more
objects if you choose):
- 3 regular triangles
-2 isosceles triangles
-2 squares
-1 pentagon
-1 regular hexagon
-1 trapezoid
-1 kite
When you are finished creating your masterpiece double check that
you used all of the required pieces and color it!!
Area and Perimeter
Area: The number of square
units inside a figure.
Perimeter: The distance around
the outside of a figure.
Rectangles and Parallelograms
A=B*H
Draw this figure on paper and find
the area and perimeter
Draw this figure on paper and
find the area and perimeter
Draw this figure on paper and
find the area and perimeter
Homework
Complete the Worksheet