right angle
A right angle is a type of angle that measures exactly 90 degrees
A right angle is a type of angle that measures exactly 90 degrees. When two lines intersect each other and form a right angle, a perfect L shape is created. The symbol for a right angle is a small square placed in the corner of the angle.
Properties of a right angle:
1. Measure: A right angle always measures 90 degrees. It is a quarter of a full rotation in a clockwise or counterclockwise direction.
2. Perpendicular lines: Two lines that form a right angle are known as perpendicular lines. Perpendicular lines intersect at a right angle, and the angle formed between them is always 90 degrees.
3. Sum of angles: In a triangle, the sum of all three angles is always 180 degrees. Therefore, if one angle in a triangle is a right angle, the other two angles will be acute angles measuring less than 90 degrees.
Applications of right angles:
Right angles are used in various aspects of our daily lives, including:
1. Construction: Right angles are crucial in building structures to ensure accuracy and stability. Architects and engineers rely on right angles when designing floor plans, walls, and corners.
2. Measurement: Right angles are used in geometric measurements, such as determining whether a shape or object is square or rectangular. Carpentry, carpentry, and sewing are a few areas where measuring right angles is vital.
3. Geometry: Right angles form the basis of many geometric concepts and formulas, including triangles, quadrilaterals, and circles. They help us understand symmetry, congruency, and the relationships between shapes.
To visually represent a right angle, draw a small square (∟) at the corner of the angle, indicating that it measures 90 degrees.
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