EducatorSharmin

Types of Angles: When line segments meet, different types of angles are formed. a) An acute angle measures less than 90 . COB is an acute angle.   b) A right angle measures exactly 90 degree. FOE is a right angle. c) An obtuse angle measures more than 90. but less than 180. ROQ is an obtuse angle. d) a reflex angle measures more than 180, but less than 360.  PQR is a reflex angle. e) A zero angle measures 0. AOB is a zero angle. f) A straight angle measures 180. AOB is a straight angle. g) A complete angle measures 360. LMN is a complete angle.

Use Properties of Parallelograms: A parallelogram is a quadrilateral with both pairs of opposite sides parallel.       Q.1. What is parallelogram? Ans: The quadrilateral which opposite sides are equal and parallel is called a parallelogram. Q.2. Formula to determine the area of a parallelogram. Ans: Area = base x height Q.3. What is the sum of 4 angles of a quadrilateral? Ans: 360 degree Q.4. Opposite sides of a quadrilateral are equal and parallel but angles are not right angle. It is called? Ans: Parallelogram Q.5. Where diagonals of a parallelogram bisect each other? Ans: At intersecting point Q.6. We measure angle in which unit? Ans: Degree unit There are four interior angles in a parallelogram and the sum of the interior angles of a parallelogram is always 360°. The opposite angles of a parallelogram are equal and the consecutive angles of a parallelogram are supplementary. The amount of turn between two lines that meet each other. The term "parallelogram PQRS" ...

Angles: In geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle. Angles formed by two rays are also known as plane angles as they lie in the plane that contains the rays. 1. What is angle? Ans: two lines from a vertex make a shape called an angle. Two rays with a common end point form an angle. An angle is also formed when two line segments meet or cross. 2. Right angle:  An angle which is equal to 90 degrees, one quarter of a full revolution is called right angle. 3. Acute angle: An angle which is less than 90 degrees or right angle is called acute angle. 4. Obtuse angle: An angle which is more than 90 degrees but less than 180 degrees 5. Point: An exact location on a plane is called a point. How is an Angle Measured? Degree is the unit by which an angle is measured. It is defined as  1/360 of a complete revolution. Thus, one complete revolution about a point is 360. We can measure angles...