Q2 B of 13 Page 96

let’s see the isosceles triangles below and without measuring let’s write which angles are equal in measurement in each triangle.


It is given that ∆PQR is isosceles and

PQ=8cm


PR=8cm


And QR=7cm


∴PQ=PR


We know angles opposite to the equal sides are equal.


So, ∠Q=∠R


More from this chapter

All 13 →
1 C

Let’s see the isosceles triangles given below and without measuring let’s write which two sides are equal in length in each triangle.


 2 A

let’s see the isosceles triangles below and without measuring let’s write which angles are equal in measurement in each triangle.


 3

Line segments AB and CD bisect each other at O. Let’s prove that AC and BD are parallel. Let’s write what kind of quadrilateral is ABCD.

 4

E and F are twp points on two parallel straight-line AB and CD respectively. O is the midpoint of line segment EF. We draw a straight line passing through O which intersect AB and CD at P and Q respectively. Let’s prove that O bisects the line segment PQ.