Name that Quadrilateral
A quadrilateral with 4 equal sides and 4 right angles.
Square
True or False?
All quadrilaterals are polygons.
True - a polygon is any 2D shape formed with straight lines. This means that all quadrilaterals are polygons.
What is the fewest number of sides needed to make a polygon?
3
True or False- all quadrilaterals have parallel lines
False- not all quadrilaterals have parallel lines.
180
A quadrilateral with opposite sides the same length and 4 right angles.
Rectangle (or square because a square is always a rectangle)
True or False?
All polygons are quadrilaterals.
False - A polygon is sometimes a square. Polygons can be other shapes such as triangles, pentagons, hexagons, heptagons, octagons, nonagons, or decagons.
A triangle with an angle that is greater than 90 degrees, but less than 180 degrees
Obtuse Triangle
True or false- parallel lines makes and x
False! Parallel lines never meet, they go one forever.
In a(n) ___________ triangle, all of their sides are equal and all of their angles are equal
Equilateral
A quadrilateral with at least 1 pair of parallel sides.
Trapezoid
True or False?
A rectangle has 4 equal sides
False
How many right angles does a square have?
4
Which statement is true?
A) A parallelogram has 4 right angles.
B) A square have equal sides.
C) A rhombus has 4 right angles.
D) A rectangle has only 4 equal sides.
B) A square have equal sides.
True or false: If c2 < a2+b2, the triangle will be classified as an obtuse triangle
False, it will be classified as an Acute Triangle
A quadrilateral with 2 pairs of equal sides and no right angles.
Parallelogram
True or False?
A circle is a polygon.
False - a polygon is any closed shape with straight lines.
A triangle with three different side lengths.
Scalene triangle
A four sided, closed shape belongs to this family of shapes.
Quadrilaterals
How many ways different ways can you classify a triangle?
6
A quadrilateral with 4 equal sides but no right angles.
Rhombus
True or false?
A rhombus is a square.
False - All squares have equal sides and right angles. A rhombus does not have right angles.
Draw a quadrilateral that is not a rectangle, rhombus or square.
Answers may vary
how many right angles does a rhombus have?
0, rhombuses does not have any right angles.
Based on the side lengths, would this triangle be classified as obtuse, right, or acute?
12 in., 16 in., 20 in.
Right Triangle