isosceles
Twin-sided triangle type
Isosceles describes a triangle with exactly two sides of equal length.
The two equal sides meet at the apex, and the angles opposite them are also equal.
An isosceles triangle has a line of symmetry down its middle.
The term comes from Greek words meaning "equal legs."
Having a ninety-degree corner
- acuteIntensely severe or perceptive
- obtuseLacking mental sharpness
- baseSupporting bottom structure
- legsLocomotion appendages below torso
apex · vertices · sides · altitude · hypotenuse · perimeter · area · congruent
Intensely severe or perceptive
- obtuseLacking mental sharpness
- rightMorally proper or entitled
- degreesUnits of measurement
- congruentIdentical in form
bisector · interior · complementary · supplementary · measurement · protractor
Supporting bottom structure
- heightVertical extent upward
- altitudeMeasured height above reference
- apexUppermost point or culmination
- vertexPoint where edges converge
midpoint · segment · plane · dimension · distance · perimeter · area · outline
Measured height above reference
- medianCentral sorted value
- bisectorLine splitting something equally
- vertexPoint where edges converge
- midpointExact center between two
centroid · incenter · circumcenter · orthocenter · concurrent · inscribed · circumscribed
Involving two parties
- axisRotation reference line
- reflectionReturned light or thought
- mirrorReflective viewing surface
- balanceSteadiness or amount owed
fold · bisector · midpoint · congruence · median · perpendicular · centerline
right-angled
Having a ninety-degree corner
legs · apex · vertices · sides · altitude · hypotenuse · perimeter · area · congruent · polygon
acute
Intensely severe or perceptive
congruent · bisector · interior · complementary · supplementary · measurement · protractor
base
Supporting bottom structure
- heightVertical extent upward
- altitudeMeasured height above reference
- apexUppermost point or culmination
vertex · midpoint · segment · plane · dimension · distance · perimeter · area · outline · contour
altitude
Measured height above reference
midpoint · centroid · incenter · circumcenter · orthocenter · concurrent · inscribed · circumscribed
bilateral
Involving two parties
- axisRotation reference line
- reflectionReturned light or thought
- mirrorReflective viewing surface
balance · fold · bisector · midpoint · congruence · median · perpendicular · centerline
- geometryangles, circles, angle, shapes, lines
- Triangleshypotenuse, vertex, vertices, equiangular, side
- shape propertiesconvex, concave, symmetric, regular, irregular
- math termsnumbers, plus or minus, linear growth, square, operand
- polygonspolygon, quadrilateral, pentagon, hexagon, heptagon
isoscelesscalene
All sides unequal
equilateral · asymmetrical · asymmetric · irregular · lopsided
- isosceles triangleThree-sided figure, two congruent