5th Vocabulary Week 25-26

Lines that intersect to form a right angle.

• Parallel lines

• Intersecting Lines

• Vertex

• Perpendicular Lines

Angle that measures less than 90 degrees

• Right Angle

• Acute Angle

• Obtuse Angle

• Vertex

An angle that measures greater than 90 degrees, but less than 180 degrees.

• Angle

• Acute Angle

• Obtuse Angle

• Right Angle

The point where two rays meet, the corner of an angle.

• Line segment

• Vertex

• Ray

• Obtuse Angle

Two rays joined at a common endpoint

• point

• line

• angle

• segment

A triangle with three equal sides

• Triangle

• Right Triangle

• Equilateral Triangle

• Isoceles Triangle

An angle that measure exactly 90 degrees

• Right Angle

• Acute Angle

• Obtuse Angle

• Vertex

A line segment with only one end point.

• Line

• Angle

• Vertex

• Ray

A triangle with two equal sides.

• Right Triangle

• Equilateral Triangle

• Isosceles Triangle

• Polygon

Angle that measures exactly 180 degrees.

• Acute Angle

• Right Angle

• Straight Angle

• Obtuse Angle