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You have studied different types of angles, such as acute angle, right angle, obtuse angle, straight angle and reflex angle in earlier classes (see Fig. 6.1). acute angle : 0° < x < 90°. right angle : y = 90°. obtuse angle : 90° < z < 180°. straight angle : s = 180°.
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(Convex and Concave Polygons) (Regular and irregular Polygons) (Angle Sum Property) (Sun of the Measures of the Exterior Angles of a Polygon) (Kinds of Quadrilateral) (Trapezium) (Parallelogram) (Kite) (Elements of a Parallelogram) + + (Angles of a Parallelogram) (Diagonals of a Parallelogram)
2 Νοε 2023 · NCERT Class 9 English Main Course Book [2023 – 24 Edition Revised Syllabus], Beehive, Moments, Words & Expressions PDF Download. November 2, 2023 by Kishen. NCERT Books Class 9 English: The National Council of Educational Research and Training (NCERT) publishes English textbooks for Class 9.
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