Triangle Vocabulary

Triangle that has two congruent sides

• Isosceles Triangle
• Scalene Triangle
• Acute Triangle
• Obtuse Triangle

Tags

CCSS.4.G.A.2

Triangle that has three congruent sides

• Equilateral Triangle
• Acute Triangle
• Equiangular Triangle
• Exterior Angle

Tags

CCSS.4.G.A.2

Triangle that has three congruent angles

• Straight Angle
• Right Triangle
• Isosceles Triangle
• Equiangular Triangle

Tags

CCSS.4.G.A.2

Triangle that has one obtuse angle

• Isosceles Triangle
• Scalene Triangle
• Acute Triangle
• Obtuse Triangle

Tags

CCSS.4.G.A.2

Triangle that has no congruent sides

• Equilateral Triangle
• Scalene Triangle
• Isosceles Triangle
• Acute Triangle

Tags

CCSS.4.G.A.2

Triangle that has three acute angles

• Right Triangle
• Vertical Angles
• Acute Triangle
• Obtuse Triangle

Tags

CCSS.4.G.A.2

Triangle that has one right angle

• Acute Triangle
• Isosceles Triangle
• Obtuse Triangle
• Right Triangle

Tags

CCSS.4.G.A.2

The measure of this angle of a triangle is equal to the sum measures of the two nonadjacent interior angles.

• Vertical Angles
• Straight Angle
• Congruent Angles
• Exterior Angle

Tags

CCSS.8.G.A.5

Sum of the interior angles of a triangle

• 90*
• 180*
• Congruent

Tags

CCSS.8.G.A.5

Two angles that their sides form two pairs of opposite rays.

• Vertical Angles
• Linear Pair
• Exterior Angle
• Straight Angle

Tags

CCSS.7.G.B.5