Geometry Flashcards
What is translation?
a shape that has moved directions ( slide)
Features of a rectangle
4 right angles and 2 sets of parallel lines
What is a scalene triangle?
A triangle where all three sides are different lenghts
What is the radius?
A line from the center of the circle to any point on the circle (edge of the circle)
What is circumference?
The perimeter around the circle
How to find the radius?
divide the diameter by 2
How to find circumference?
Multiply the diameter by 3.14
What is a rhombus?
shape with 4 congruent sides and two pairs of parallel lines
What is an acute angle?
an angle that measure less than 90 degrees.
What is an isosceles triangle?
a triangle where two sides are the same lenght
What is a right angle?
an angle that measures EXACTLY 90 degrees.
What is reflection?
an image forms from the reflection of another ( flip)
What is an obtuse triangle?
an triangle that has one angle that is greater than 90 degrees.
What is a chord?
a line on a circle that touches to point of the edge of the circle. Never the center.
What is a square?
a shape with 4 sides, 4 right angles and 2 sets of parallel lines
How much does a straight line measure?
180 degrees
What is an acute triangle?
a triangle where all angles are less that 90 degrees.
What is a right triangle?
a triangle with a 90 degree angle.
What is an obtuse angle?
an angle that is greater than 90 degrees. (91-179 degrees)
What is the diameter?
a line (chord) that passes through the center of a circle.
what is subdivide?
taking a shape and splitting/ dividing it into more than one shape
How to find diameter?
multiply the radius by 2
What is a trapezoid?
a shape with only one pair of parallel lines
what is a parallelogram?
a shape where opposite sides are parallel and congruent
What is rotation?
an image made by turning an original image ( turn)
what is an equilateral triangle?
a triangle with three equal sides.
what is combine?
putting shapes together to form a new shape ( ex. two trapezoids will make a hexagon.
What shape has 8 sides?
octagon
What shape has 5 sides?
pentagon
What shape has 9 sides?
nonagon
what shape has 10 sides?
decagon
What shape has 6 sides?
hexagon
what shape has 4 sides?
quadrilateral
