Geometry is the branch of mathematics that is concerned with the properties and relationships of points, lines, angles, curves, surfaces, and solids.
The pure mathematics of points and lines and curves and surfaces.
They are called perpendicular lines that intersect each other at right angles.
intersecting lines * * * * * Non-perpendicular intersecting lines. Or else the angles would be right angles.
Perpendicular lines intersect to form right angles
It is geometry.
Geometry is the branch of mathematics that is concerned with the properties and relationships of points, lines, angles, curves, surfaces, and solids.
The exterior of the Sydney Opera House appears to have no lines, only curves. If it has no lines, it has no angles.
Yes they have straight lines no curves and angles.
Origin
geometry
Those angles are called Alternate Exterior Angles. When two lines are crossed by another line (which is called the Transversal), the pairs of angles on opposite sides of the transversal but outside the two lines are called Alternate Exterior Angles.
Angles are the points at which lines meet. Sides are the opposite, being the lines that connect at angles.
The angles that share a vertex and a side of a transversal but no interior points are called vertical angles. Vertical angles are formed when two lines intersect, and they are always congruent.
The pure mathematics of points and lines and curves and surfaces.
Geometry
Geometry is the pure mathematics of points and lines and curves and surfaces.