Middle School Math Vocabulary Part 1

Acute Triangle

• a triangle that has three acute angles

• a triangle that has all three sides the same length

• a triangle that has at least two sides with the same length

• a triangle that has no two sides with the same length

Tags

CCSS.4.G.A.2

Equilateral Triangle

• a triangle that has three acute angles

• a triangle that has all three sides the same length

• a triangle that has at least two sides with the same length

• a triangle that has no two sides with the same length

Tags

CCSS.4.G.A.2

Isosceles Triangle

• a triangle that has three acute angles

• a triangle that has all three sides the same length

• a triangle that has at least two sides with the same length

• a triangle that has no two sides with the same length

Tags

CCSS.2.G.A.1

Scalene Triangle

• a triangle that has three acute angles

• a triangle that has all three sides the same length

• a triangle that has at least two sides with the same length

• a triangle that has no two sides with the same length

Tags

CCSS.4.G.A.2

Angle

• two rays that share an endpoint

• a straight row of points that goes on forever in both directions

• a straight row of points that starts at one point and ends at another point, or, a part of a line

• a straight row of points that starts at one point and goes on forever in one direction

Tags

CCSS.HSG.CO.A.1

Line

• two rays that share an endpoint

• a straight row of points that goes on forever in both directions

• a straight row of points that starts at one point and ends at another point, or, a part of a line

• a straight row of points that starts at one point and goes on forever in one direction

Tags

CCSS.4.G.A.1

Line Segment

• two rays that share an endpoint

• a straight row of points that goes on forever in both directions

• a straight row of points that starts at one point and ends at another point, or, a part of a line

• a straight row of points that starts at one point and goes on forever in one direction

Tags

CCSS.4.G.A.1

Ray

• two rays that share an endpoint

• a straight row of points that goes on forever in both directions

• a straight row of points that starts at one point and ends at another point, or, a part of a line

• a straight row of points that starts at one point and goes on forever in one direction

Tags

CCSS.4.G.A.1

Acute Angle

• an angle with a measure less than 90^o

• an angle that measures more than 90^o but less than 180^o

• an angle that forms a square corner and measures 90^o

• the point where two rays, lines, or line segments meet to form an angle.

Tags

CCSS.4.G.A.1

Obtuse Angle

• an angle with a measure less than 90^o

• an angle that measures more than 90^o but less than 180^o

• an angle that forms a square corner and measures 90^o

• the point where two rays, lines, or line segments meet to form an angle.

Tags

CCSS.4.G.A.1