2 Demensional Geometry Flashcards
To effectively reinforce and enhance understanding of geometric concepts, terms, and theorems through interactive learning and recall practice, enabling students to confidently apply knowledge in solving geometric problems and real-world applications. (13 cards)
What is the Formula for Finding Circumfrence?
2πr
What is the Formula for Finding Area of a Circle?
πr2
What is the Formula for Finding area of a Circle’s Sector?
a(sector) = m / 360 * a(circle)
How do you find Area of a Composite Figure?
Separate the Shapes, Find area of each and add them Together.
How do you find the area of a Trapezoid?
.5(base+base) * height
How do you find Area of a parallelogram or rectangle?
Base * Height
How do you find the Area of a Square?
Side2
How do you find the area of a Triangle?
.5(base * height)
What degrees is a complementary angle?
90
What degrees is a supplementary angle?
180
How can you tell if three measures can be a Triangle?
If any two measures add up to be bigger than the third one.
How can you find the value of the third side of a triangle?
Add the two given measures and then subtract them, it has to be less than the adding and more than the subtracting.
Ex: 7 and 12
7 + 12 =19
12 - 7 = 5
x>5
x<19
How do you know if two triangles are same shape, same size, both or neither?
If they share the same degrees, they are the same shape. If they have the same side lengths, they are the same size.
