Angles
How many degrees in a right angle?
90 degrees
What do you call a polygon with 5 sides?
Pentagon
What quadrilateral has exactly 1 pair of parallel sides?
a trapezoid
What do you call two lines that intersect at a 90 degree angle?
Perpendicular lines
What do you call a triangle with 3 congruent or equal sides?
Equilateral triangle
What kind of angle is less than 90 degrees?
An acute angle
What do you call a polygon with 6 sides
Hexagon
What is the difference between and irregular pentagon and a regular pentagon?
All of the sides are equal or congruent in a regular pentagon.
What do you call two lines that will never intersect?
parallel lines
What do you call a triangle with 2 sides that are equal or congruent?
An isosceles triangle
What kind of angle is greater than 90 degrees but less than 180 degrees?
An obtuse angle
What do you call a polygon with 8 sides?
Octagon
What do you call the point on an angle where two rays meet?
vertex
What do you call two lines that cross that are not perpendicular?
Intersecting lines
What do you call a triangle where none of the sides are congruent?
a scalene triangle
What do you call an angle that is 180 degrees?
A straight angle
What do you call a polygon with 4 congruent sides and 4 right angles?
A square
What do you call a quadrilateral that has 4 equal sides and 2 pair of parallel sides that isn't a square?
rhombus
How many lines of symmetry in a square?
4
What do you call a triangle where all of the angles are acute?
an acute triangle
How many degrees are in a circle?
360 degrees
What do you call a polygon with 10 sides?
Decagon
What do you call a part of a line between two points?
a line segment
How many lines of symmetry are in a circle?
An infinite amount
All of the angles in a triangle equal ______ degrees.
180