Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
5 Cards in this Set
- Front
- Back
Imagine a triangle with angles of 60*, 70* and a 'trapped' side of 5cm. Is the triangle fixed in shape and size?
|
Yes. It can only be drawn one way. The reason for this is Angle-Side-Angle (ASA).
|
|
Imagine a triangle with sides 5cm and 6cm and a 'trapped' angle of 80*. Is this triangle fixed in shape and size?
|
Yes. There is only one place to put the last line. The reason for this is Side-Angle-Side (SAS).
|
|
Imagine a triangle with sides of 5cm, 6cm and 7cm. Is this triangle fixed in shape and size?
|
Yes. The three lines fix the size of the triangle, as well as the shape. This reason for this is Side-Side-Side (SSS)
|
|
Imagine a triangle with sides of 7cm and 4cm with and angle of 30*, not 'trapped'. Is it fixed in shape and size?
|
No. The 4cm line can move as far as it wants without affecting the two other things. This is called the 'Ambiguous Case'
|
|
Is an RHS (Right-Angle, Hypotenuse, side) angle fixed?
|
Yes. Pythagoras' theorem can be used to calculate the third side. It is not fixed because of the SSS rule
|