right angle?
1 It is a triangle 2 It has three sides 3 Each side is the same length 4 Each internal angle is the same size 5 Each external angle is the same size
Atoms
The apothem is the distance from the center to the middle of any side on a regular polygon. That is, a shape with every single side and angle the same.
two angles
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each side of a angle is a vertex * * * * * No, the point where the sides meet is the vertex. The sides themselves are ... just sides.
Think of a four-sided figure. If you try to add an angle to it, you will end up with five sides. If you try to add a side to it, you will end up with another angle. Every time a side heads in a different direction, an angle is formed.
Every time a new side begins, a new angle is created.
If the two triangles only had one angle which was the same, then the third side could be different lengths on each triangle. But if more than one angle is the same, then all three angles will be the same (as on the other triangle), and also the third side will be the same as well.
Equilateral means 'same length' - Therefore if the length of each side in a triangle are the same, each angle MUST also be the same.
I only know 3. SSS (side/side/side) -> if all three sides are the same length SAS (side/angle/side) -> if two sides and the angle between them are the same ASA (angle/side/angle) -> if two angles and the side between them are the same
the opposite of parallel lines are Perpendicular. A perpendicular angle or line is where there is a 90 degree on each and every side.