Quadrilaterals
A shape with 4 equal sides and 4 right angles.
What is a square?
Is shown by a dot. An exact location in geometry. Can be found on a number line, usually labeled with a letter.
What is a point?
A triangle with 3 equal sides and 3 acute angles.
What is an equilateral triangle?
An angle that measures 90 degrees.
What is a right angle?
Has 6 faces, 12 edges and 8 vertices. Some examples of this shape include ice cubes or dice.
What is a cube?
A shape with 4 equal sides and opposite angles are congruent.
What is a rhombus?
Has no beginning or end point. Goes on forever (indefinitely) in opposite directions. Can be drawn with two arrows at each end.
What is a line?
A triangle with 2 congruent sides.
What is an isosceles triangle?
An angle that is more than 90 degrees.
What is an obtuse angle?
A shape with 2 faces, 1 edge and 0 vertices. The base is a circle. Real life objects with this shape can be used in traffic and to hold sweet, cold ice cream.
What is a cone?
A shape with 1 set of parallel lines, opposite angles are congruent (2 obtuse and 2 acute) and 1 line of symmetry. Half of a hexagon.
What is a trapezoid?
Two lines that meet (cross) at one point.
What are intersecting lines?
A triangle with one right angle.
What is a right triangle?
An angle that measures less than 90 degrees.
What is an acute angle?
A shape with 1 face, 0 edges and 0 vertices. The shape of many balls used in sports.
What is a sphere?
A shape with 2 pairs of parallel lines, 4 right angles and opposite sides are congruent.
What is a rectangle?
When two lines meet and form angles that measure 90 degrees (right angles).
What are perpendicular lines?
What are two ways we classify triangles?
We classify them by angles and sides.
A polygon with 10 sides and 10 angles.
What is a decagon?
A shape with 5 faces, 8 edges and 5 vertices. Composed of a square and 4 triangles.
What is a square-based pyramid?
A shape with 2 pairs of parallel lines, opposite sides are congruent and opposite angles are congruent (2 obtuse and 2 acute).
What is a parallelogram?
Is formed when two rays share an endpoint.
What is an angle?
A triangle with no equal sides and an obtuse angle.
What is a scalene, obtuse triangle?
If you were to measure the angle of a straight line, what would the angle be?
The angle would measure 180 degrees.
A shape with 5 faces, 9 edges and 6 vertices.
What is a triangular prism?