Shapes
What is a right triangle?
A triangle with one right angle.
What object is formed by the crossing of two straight lines?
A point.
Tell an example of the size of an acute angle in degrees.
Any number less than 90.
What is the best word to describe a translation?
a. Flip over
b. Move around
c. Slide
d. Blow up
c. Slide
How many points do you need to name a line?
Draw an example.
Two
How do you find the area of a triangle?
Finding half of the product of the base and the height.
What do you call two lines that never cross and are in the same plane?
Parallel
Tell an example of the size of an obtuse angle in degrees.
Any number greater than 90 but less than 180.
What is the best word to describe a reflection?
a. Flip over
b. Move around
c. Slide
d. Blow up
a. Flip over
How many points do you need to name an angle?
Draw an example.
Three
Why is a rectangle called that?
Because it has four right angles.
What do you call two lines that cross in a 90 degrees angle?
Perpendicular.
What is a straight angle?
An angle that measures 180 degrees.
What is the best word to describe a rotation?
a. Flip over
b. Move around
c. Slide
d. Blow up
b. Move around
What do you call a quadrilateral with all sides and angles congruent?
Square
How many sides does a pentagon have?
Five
What is a bisector?
A line that divides an object in two equal parts.
What is the sum of the interior angles of any triangle?
180 degrees.
What remains the same after a rigid transformation?
Shape and size.
What's the size of the interior angles of an equilateral triangle?
60 degrees.
What shape do you get when you apply a rigid transformation to a triangle?
The same shape. A triangle.
How wide is a straight line?
A straight line has no width.
Draw a pair of vertical angles.
Picture.
What do you need to know to do a rotation?
Angle of rotation
Center of rotation
Direction (clock or counter clockwise)
What is the sum of the interior angles of a quadrilateral?
2 times 180 = 360 degrees.