Angles
An angle that measures 180 degrees
What is a straight angle?
A closed four sided figure is this type of polygon
quadrilateral
a pair of lines that never cross
parallel lines
length x width
Gigi is cutting the back grass. It is a rectangle. One side is 60 feet long and the other side is 25 feet long. It took Gigi 30 minutes to mow half of the backyard. What is the area of the space that Gigi mowed ?
750 sq feet
An angle that measures 90 degrees
What is a right angle?
equilateral triangle
a pair of lines that cross and do not form right angles
intersecting lines
What is perimeter?
The distance around an object
List the factors of 100
1,2, 4, 5, 10, 20, 25, 50, 100
Describe an acute angle
An acute angle measures more than 0 degrees but less than 90 degrees.
Explain why a circle can not be a polygon.
A circle does not have 3 or more line segments.
a pair of lines that intersect and form right angles
perpendicular lines
If the school gym is 80 feet by 50 feet what is the total area of the gym floor in square feet?
4,000 sq feet
Draw and label a rectangle with an area of 32 square units and a perimeter of 36 units.
The rectangle should be 16 units in length and 2 units wide. Because 16 x 2 = 32 units and 16 + 16+ 2 + 2 = 36
Describe an obtuse angle.
This type of polygon has two pairs of parallel sides, and is a quadrilateral. What type of polygon is it?
parallelogram
a real or imaginary line that divides a shape into two mirror images
line of symmetry
If the figure is 100 miles long and 9 miles wide, what is the area AND the perimeter of the figure?
900 sq miles = a
218 miles = p
What happens to the area of a rectangle when both dimensions are doubled? Start with a rectangle that is 5 m in length and 3 m in width. Show two more rectangles when this happens
Answers should show a rectangle that is 10 by 6 and 20 by 12.
What are the sides of the angle (two rays) that have the same endpoint?
the vertex
What type of triangle has two sides that are the same length?
Isosceles Triangle
What is the difference between a line and a line segment?
A line continues in either direction forever, a line segment has two endpoints.
If the length of a figure is 20 meters and the width is 2 meters. What is the perimeter?
44 meters
Lisa's room is 90 inches by 90 inches. She bought a rug for her floor that is 50 inches by 40 inches. How much of her floor is NOT covered by the rug?
6,100 sq inches.