100 Math Facts 6th Grade (81-90)
(81) REGULAR POLYGON
What do we call a polygon in which all angles are congruent and all sides are congruent?
In what shape do all the interior angles add up to 180 degrees?
(83a) SCALENE (TRIANGLE)
What kind of triangle has no equal sides?
(83b) ISOSCELES (TRIANGLE)
What kind of triangle has two equal sides?
(83c) EQUILATERAL (TRIANGLE)
What kind of triangle has three equal sides?
(84a) ACUTE (TRIANGLE)
What do we call a triangle with all angles measuring less than 90 degrees?
(84b) OBTUSE (TRIANGLE)
What do we call a triangle containing one obtuse angle?
(84c) RIGHT (TRIANGLE)
What do we call a triangle containing one right angle?
What is a four-sided figure with two sets of parallel sides called?
What is the distance around the outside of a closed figure called?
What is a segment connecting two points on a circle and passing through its center called?
What is the distance from the edge of a circle to its center called?
What is the distance around a circle?
(90) C = π • d
What is the formula for finding the circumference of a circle?