Advertisements
Advertisements
प्रश्न
Find the area of the following triangle:
उत्तर
Area of triangle = `1/2 xx "Base" xx "Height" `
Base = 4 cm
Height = 3 cm
Area = `1/2 xx 4 xx 3`
= `12/2`
= 6 cm2
APPEARS IN
संबंधित प्रश्न
Find the area of a triangle whose vertices are A(3, 2), B (11, 8) and C(8, 12).
Let A (4, 2), B (6, 5) and C (1, 4) be the vertices of ΔABC.
(i) The median from A meets BC at D. Find the coordinates of point D.
(ii) Find the coordinates of the point P on AD such that AP: PD = 2:1
(iii) Find the coordinates of point Q and R on medians BE and CF respectively such that BQ: QE = 2:1 and CR: RF = 2:1.
(iv) What do you observe?
(v) If A(x1, y1), B(x2, y2), and C(x3, y3) are the vertices of ΔABC, find the coordinates of the centroid of the triangle.
The area of a triangle is 5 sq units. Two of its vertices are (2, 1) and (3, –2). If the third vertex is (`7/2`, y). Find the value of y
Find the angle subtended at the origin by the line segment whose end points are (0, 100) and (10, 0).
If G be the centroid of a triangle ABC and P be any other point in the plane, prove that PA2+ PB2 + PC2 = GA2 + GB2 + GC2 + 3GP2.
Find the area of the blades of thc magnetic compass shown in Fig.. 12.27. (Take √11 = 3.32).
Find the value of p for which the points (−5, 1), (1, p) and (4, −2) are collinear.
If Δ = `|(1, x, x^2),(1, y, y^2),(1, z, z^2)|`, Δ1 = `|(1, 1, 1),(yz, zx, xy),(x, y, z)|`, then prove that ∆ + ∆1 = 0.
Let ∆ = `|("A"x, x^2, 1),("B"y, y^2, 1),("C"z, z^2, 1)|`and ∆1 = `|("A", "B", "C"),(x, y, z),(zy, zx, xy)|`, then ______.
Find the coordinates of the point Q on the x-axis which lies on the perpendicular bisector of the line segment joining the points A(–5, –2) and B(4, –2). Name the type of triangle formed by the points Q, A and B.