right angles
Square corner formations
Right angles are angles of exactly ninety degrees—the angle formed when two lines meet perpendicularly.
Corners of squares, rectangles, and most room walls meet at right angles.
The phrase at right angles to means perpendicular: The side street runs at right angles to the main road.
At right angles
- 90 degreesMeasure of perpendicularity
- CartesianOf x-y coordinate geometry
- coordinateArrange for unified action
- axesHeaded chopping tools
quadrant · intersection · vertex · corner · bisect · Euclidean · plane · angular
Right-angled drawing guide
- carpenter's squareL-shaped measuring tool
- plumbExactly vertical or true
- levelHorizontal or uniform position
- framing squareL-shaped carpentry gauge
set square · speed square · crossbar · flush · true · alignment · edge · corner joint
perpendicular
At right angles
- 90 degreesMeasure of perpendicularity
- CartesianOf x-y coordinate geometry
- coordinateArrange for unified action
axes · quadrant · intersection · vertex · corner · bisect · Euclidean · plane · angular · protractor
T-square
Right-angled drawing guide
- carpenter's squareL-shaped measuring tool
- plumbExactly vertical or true
- levelHorizontal or uniform position
framing square · set square · speed square · crossbar · flush · true · alignment · edge · corner joint · miter
- squaresperfect square, grid square, magic square, square number, center square
- geometryangles, circles, shapes, lines, volume
- street gridstreets, avenues, boulevards, intersections, blocks
- polygon featuressides, vertices, edges, angles, perimeter
- De StijlPiet Mondrian, Mondrian, primary colors, black lines, Utrecht
- grid patternsgrid pattern, square grid, checkerboard, lattice, gridlines
right anglesacute angles
Measures below ninety degrees
obtuse angles · straight angles · acute · obtuse · slanted
right, angle, rectangle, rectitude, rectangular, right angle, orthogonal, right-angled