Document page
mathematicsprinted 60 · PDF 61
165 pagesrevision 46935
printed 60 · PDF 61
Page image rendered from the stored file at 110 dpi; it sharpens as you zoom. Outlines are placed from each region’s stored position on the page (595 × 842 pt).
readable
Source of this text: embedded text layer. The better of the embedded text and OCR is kept.
60
So, m of PQ = m of QR = m of PR
“Diagonals length are same”
Explanation:
Frequently this sort of concept associated in a question does come where a quadrilateral
shape is made and 3 coordinates of it are given. Then they ask you to find the 4th
coordinate.
First step to solve this question is to figure out whether these shapes(listed in next bullet
point) are being made by given coordinates or not.
Rectangle, square, parallelogram, kite, trapezium and rhombus are the only
quadrilateral whose diagonal lengths are the same.
Hence, if these shapes are identified you can apply this formula:
x1+x3 = x2 + x4 and y1+y3 = y2+y4
Solved example:
Equation of straight line:
General form : y=mx+c
Key:
x and y are coordinates of line
m = gradient/slope of line
c = y intercept of line
Gradient/slope/m rules in straight line:
When the line is parallel to the x-axis m=0