Acute-angled triangle — meaning in maths · Mathitat glossary

Mathitat

Serious maths,
gently done.

Number

Absolute value Additive inverse Ascending order Associative property Common factor Common multiple Commutative property Composite number Cube number Cube root Decimal Decimal place Denominator Descending order Difference Digit Divisibility Equivalent fraction Error interval Even number Exponent Factor Factor pair Fraction Highest common factor (HCF)Greatest common factor (GCF)Greatest common factor (GCF)Improper fraction IndexExponentExponent Integer Integer operation rules Inverse operation Irrational number Lower bound Lowest common multiple (LCM)Least common multiple (LCM)Least common multiple (LCM)Mixed number Multiple Multiplicative inverse Natural number Negative number Number line Numerator Odd number Operation Order of operations Percentage Place value Power Prime Prime factor Prime factorisationPrime factorizationPrime factorization Product Quotient Rational number RationaliseRationalizeRationalize Reciprocal Recurring decimal Remainder Repeating decimal Significant figure Square number Square root Standard formScientific notationScientific notation Sum SurdRadicalRadical Terminating decimal Upper bound

Geometry & measures

Acute angle Acute-angled triangle Alternate angles Angle Arc Area Bearing Bisector Capacity Centimetre Chord Circumference Co-interior angles Cone Congruent Corresponding angles Cosine Cross-section Cube Cuboid Cylinder Decagon Degree Diagonal Diameter Edge Elevation EnlargementDilationDilation Equilateral triangle Exterior angle Face Gram Heptagon Hexagon Hypotenuse Interior angle Irregular polygon Isosceles triangle Kilogram Kilometre Kite Line of symmetry LitreLiterLitre Locus Magnitude Mass MetreMeterMetre Millilitre Millimetre Net Nonagon Obtuse angle Obtuse-angled triangle Octagon Parallel Parallelogram Pentagon Perimeter Perpendicular Pi Plan Plane of symmetry Polygon Prism Pyramid Pythagoras' theoremPythagorean theoremPythagorean theorem Quadrilateral Radius Rectangle Reflection Reflex angle Regular polygon Rhombus Right angle Right-angled triangleRight triangleRight triangle Rigid transformation Rotation Rotational symmetry Scale drawing Scale factor Scalene triangle Sector Segment Semicircle Similar Sine Sphere Square Surface area Symmetry Tangent Tetrahedron Tonne Transformation Translation Transversal TrapeziumTrapezoidTrapezoid Trigonometry Unit conversion Vector Vertex Vertically opposite angles Volume

Acute-angled triangle

A triangle where every angle is less than 90°.

In Español · sample

Triángulo acutánguloUn triángulo en el que todos los ángulos son menores de 90°.