Polygon Pros
Name one example of a polygon
How many sides does a quadrilateral have?
4
A triangle with all sides the same length is called a
Equilateral
A triangle with one 90° angle is called a
Right
What degree is a right angle?
90
True or False: A square is a type of rectangle.
Name one type of quadrilateral.
square, rectangle, rhombus, trapezoid
A triangle with two sides the same length is called a
Isosceles
A triangle with all angles less than 90° is called a
Acute Triangle
What tool is used to measure angles?
Protractor
What do we call a polygon that has all sides and all angles equal?
Regular Polygon
Which quadrilateral has 4 equal sides and 4 right angles?
Square
A triangle with all different side lengths is called a
Scalene
A triangle with one angle greater than 90° is called a
Obtuse
Obtuse
Is a circle considered a polygon? Why or why not?
No, because it does not have straight sides (it has a curved edge).
What is the name of a quadrilateral with only one pair of parallel sides?
Trapezoid
If two sides of a triangle are 5 cm and the third side is also 5 cm, what type of triangle is it?
Isosceles
Triangle A has angles 30°, 60°, and 90°. What type of triangle is it?
Right triangle
If two angles added together form 90 degrees, what type of angle is that?
Complimentary
How many sides does a decagon have?
10
What do we call a quadrilateral that has two pairs of parallel sides?
Parallelogram
Triangle A has side lengths of 6 cm, 6 cm, and 6 cm. Triangle B has side lengths 5 cm, 5 cm, and 8 cm. Triangle C has side lengths 4 cm, 6 cm, and 9 cm.
Which triangle is equilateral, which is isosceles, and which is scalene?
A = E quilateral B = Isosceles C = Scalene
Triangle B has angles 40°, 40°, and 100°. What type of triangle is it and why?
Obtuse triangle, because one angle is greater than 90°.
If I have a 125 degree angle and a 55 degree angle, what does that form?
Supplementary angle