FORMULAS
b x h ÷ 2
What is the formula for the area of a triangle?
When two rays connect and form a vertex
What is an angle?
A triangle that is less than 90º
What is an acute triangle?
Shape with four sides of any length
An angle larger than 90° an smaller than 180°
What is an obtuse angle?
h(b1 + b2) ÷ 2
What is the formula for the area of a trapezoid?
The place where the endpoints join together as one
What is a vertex?
Triangle with sides that ad up to more than ninety degrees but less then 180 degrees
What is an obtuse triangle?
Quadrilateral with all parallel sides
What is a parallelogram?
Two angles across from each other that will equal each other
What is an adjacent angle?
A = πr2
What is the area of a circle?
Any figure that is closed or straight sided
What is a polygon?
When there are two or more equal sides on a triangle
What is an isosceles triangle?
Shape with two parallel sides
What is a trapezoid?
Angles matched up upon position that are equal to each other
What is a corresponding angle?
2πr
What is the formula for circumference?
Cuts the parallel lines creating eight angles
What is a traversal.
When all sides are equal to each other
What is an equilateral triangle?
Shape with 11 sides
What is a dodecagon?
Angles on the opposite side of the transversal that are equal to each other.
What are alternate interior angles?
d ÷ 2
What is the formula for radius of a circle?
When two or more angles add up to exactly ninety degrees.
What is a complementary angle.
Triangle with no equal sides
What is a scalene triangle?
Shape with 9 sides
What is a nonagon?
An angle that is on the opposite side of the transversal that are equal to each other
What is an alternate exterior angle?