Euclidean Geometry

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What do you call a two lines that meet in a point?

• Parallel lines

• Intersecting lines

• Concurrent lines

• Perpendicular lines

A lines which all intersect at the same point.

• Parallel lines

• Intersecting line

• Concurrent lines

• Perpendicular line

It is a point in the exact middle of a given straight line segment.

• Intersection point

• Collinear point

• Midpoint

• Ray

What do you call a points that lie in the same straight lines or segment?

• Point

• Collinear point

• Line segment

• Midpoint

An angle which measure greater than 90°.

• Right angle

• Obtuse angle

• Acute angle

• Reflex angle