Question

OBJECTIVE:To verify the Basic Proportionality Theorem using parallel line board and triangle cut-outs. Basic Proportionality Theorem If a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct points, the other two sides are divided in the same ratio. MATERIAL REQUIRED : coloured paper, ,pair of scissors, parallel line board, ruler, sketch pens. PRE-REQUISITE KNOWLEDGE: Drawing parallel lines on a rectangular sheet of paper. PROCEDURE : Cut three different triangles from a coloured paper. Name them as ∆ABC, ∆PQR and ∆DEF. Take the parallel line board (a board on which parallel lines are drawn) as shown in Fig 4 (a). (Note: Students can make the parallel line board, using the techniques given in class IX laboratory manual.) Place ∆ABC on the board such that any one side of the triangle is placed on one of the lines of the board as shown in Fig 4 (b). (It would be preferable to place the triangle on the lowermost or uppermost line.) Mark the points P1, P2, P3, P4 on Δ ABC as shown in Fig 4(b). Join P1P2 and P3P4. P1P2 || BC and P3P4 || BC. Note the following by measuring the lengths of the respective segments using a ruler. Repeat the experiment for ∆DEF and ∆PQR. **Remove the picture from here> APPLICATIONS: Pictures for your reference, remove it while submitting the document. PLS HELP I HV EXAM TOMORROW PLSS

Answer 1

Answer:

sorry I didn't know the answer