Flashcards
Angle Rules and deffinitions
Cards in this deck (14)
- 1a = bVertically opposite angels are equal.
vert. opp. <'s - 2a + b = 180Adjacent angels on a straight line add to 180.
adj. <'s on st. line
- 3a + b + c = 360Angles at a point add to 360.
<'s at pt.
- 4(transversal) a = bCorresponding angels on parallel lines are equal.
corresp. <'s, // lines.
- 5a = bAlternate angels on parallel line are equal.
alt.<'s, // line.
- 6a + b = 180Co-interior angles on parallel lines add to 180.
co-int. <'s, // lines
- 7—Angels in a triangle add to 180.
< sum of ^
- 8a = bThe base angles of an isosceles triangle are equal.
base <'s isos. ^
- 9—Each angle in an equilateral triangle is 60.
< in equailat. ^
- 10a + b = cThe exterior angle of a triangle equals the sum of the two interior opposite angles.
ext. < of ^
- 11—Interior angles in a quadrilateral add up to 360.
< sum of quad.
- 12Sum= 180 x (5-2) = 180 x 3 = 540The interior angles of a polygon:
Sum= 180 (n-2)*,
where n is the number of sides.
int. < sum of polygon
- 13a + b + c + d = 360The exterior angles of a polygon add to 360
ext. < sum of polygon
- 14—
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- Flashcards on Angle Rules and deffinitions, created by navnand on 18/05/2016.
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- navnand
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