WebTo find : A ( ABC) : A ( BCD) ABC and BCD are between the parallel lines AD & BC ∴ They have equal height Also, they have same base BC A ( ABC ) 1 ∴ A ( BCD ) = 1 (triangles with equal bases & heights) 3 In figure, ∠ABC = 75°, ∠EDC=75° state which two triangles are similar and by which test ? Also write the Web1. From the point A draw a circle, in which first mark a larger arch, as BC, then a smaller one, as CD, then mark a third arch (DE) equal to the first, and a fourth (EF) equal to the second. 2. Joyn AB, AC, AD, AE, AF, as also BC, CD, DE, EF by right lines. 3. From C let fall a Perpendicular equal to CD, as CG. 4.
NCERT Solutions for Class 9 Maths Chapter 6 Lines and Angles Ex …
WebMar 6, 2024 · If ∠EAB = ∠FAC, AB = 2x + 3, AC = 3y + 1, BD = x and DC = y + 1 then the values of x and y are: Q7. In an equilateral triangle ABC, D is a point on side BC such that BD = 1/3 BC then AB2 = Q8. In ABC, ∠B = 90°, AB = 12 cm and AC = 15 cm. D and E are points on AB and AC respectively such that ∠AED = 90° and DE = 3 cm then the area of ADE is Q9. WebOct 16, 2024 · Then I used Geogebra to look for some results. There I found that $\angle APQ = \angle AFE$, concluding that $\Delta APQ \sim \Delta AFE$. Can anybody explain which is that so? I put $\angle AFE = (90 - x)^\circ$ and $\angle AEF = (45 + x)^\circ$, to my surprise, the results worked, but why? trajectoire automobile
In the adjoining figure, if AB CD FE, then find x and AE.
WebIn the given figure , if AB CD FE then find x and AE . Medium Open in App Solution Verified by Toppr In ΔABF,DX∣∣AB DBFD =XAFX ...(1)(By Basic proportionality theorem) In … WebIn the given figure, AD = AE and AD2 = BD x EC. Prove that: triangles ABD and CAE are similar. Solution: In Δ ABD and Δ CAE, ∠ADE = ∠AED [Angles opposite to equal sides are equal.] So, ∠ADB = ∠AEC [As ∠ADB + ∠ADE = 180 o and ∠AEC + ∠AED = 180 o ] And, AD 2 = BD x EC [Given] AD/ BD = EC/ AD AD/ BD = EC/ AE WebIn the adjoining figure, if AB CD FE, then find x and AE. 10th geometry similarity ex 1.2 Q7 trajectoire ipaed