CBSE Class 9 Triangles — practice questions
12 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 9 Triangles in the app →Per NCERT Class 9 Math, HERON's FORMULA gives the area of a triangle in terms of which inputs?Per NCERT, given a triangle with sides a, b, c — what is the SEMI-PERIMETER s used in Heron's formula?Per NCERT, what is HERON's FORMULA for the area of a triangle with sides a, b, c and semi-perimeter s?Per NCERT's Example 5, applying Heron's formula to a triangle with sides 3, 4, 5 gives what area?Per NCERT, what does the converse of the Baudhāyana–Pythagoras (Pythagoras) theorem tell us about a triangle wPer NCERT, for a triangle with sides a, b, c and CIRCUMCIRCLE radius R, what is the area formula?Per NCERT, for a triangle with sides a, b, c and INCIRCLE radius r, the area equals which expression?Per NCERT, can the area of a general 4-gon (quadrilateral) be determined from JUST the lengths of its four sidPer NCERT, what is BRAHMAGUPTA's FORMULA for the area of a CYCLIC quadrilateral with sides a, b, c, d and semiPer NCERT, BRAHMAGUPTA's formula generalises Heron's formula. What special case of Brahmagupta's formula givesPer NCERT, applying Brahmagupta's formula to a RECTANGLE of sides a, b (which is cyclic), what value emerges fPer NCERT, a CYCLIC quadrilateral has sides 3, 4, 5, 6. What is its area (using Brahmagupta's formula)?