Angles & Straight Lines Math Review
math tutorials > geometry of angles & straight lines
Angles on a straight line, at a point & vertically opposite angles
Angles on a straight line
The sum of the angles on a straight line is 180º
Angles at a point
The sum of the angles formed at a point is 360º
Vertically opposite angles
When 2 straight lines intersect, vertically opposite angles are formed. These angles are equal.
Geometry problems for you to try.
x = 52º
y = 128º
z = 25º
t = 148º