Question | Answer |
having the same size and shape | congruent |
a two-dimensional pattern that can be folded into a three-dimensional polyhedron | nets |
a triangle that has three angles less than 90 degrees | acute triangle |
the line segment where two faces of a solid figure meet | edge |
a polygon that is a flat surface of a solid figure | face |
a solid figure with faces that are solid figures | polyhedron |
a tool used for measuring or drawing angles | protractor |
a polygon in which all sides are congruent and all angles are congruent | regular polygon |
the point where two or more rays meet; the point of intersection of two sides of a polygo; the point of intersection of three or more edges of a solid figure; the top point of a cone | vertex |
a polygon with 10 sides and 10 angles | decagon |
a parallelogram with four right angles | rectangle |
a triangle with 3 equal, or congruent sides | equilateral triangle |
a quadrilateral with exactly one pair of parallel sides | trapezoid |
a triangle that has a 90 degree angle | right trangle |
a polygon with 8 sides and 8 angles | octagon |
a parallelogram with 4 equal, or congruent sides | rhombus |
a triangle with no congruent sides | obtuse triangle |
a closed plane figure formed by 3 or more line segments | polygon |
a triangle that has one angle greater than 90 degrees | obtuse triangle |
a polygon with 4 sides and 4 angles | quadrilateral |
a triangle with exactly two congruent sides | isosceles triangle |
a polygon with 6 sides and 6 angles | hexagon |
a quadrilateral whose opposite sides are parallel and have the same length, or are congruent | parallelogram |