///Hope this helps///
contruct an isosceles triangle PQR suxh that PQ=PR=10cm and QR=9cm.Measure and write down the size of QPR
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The perimeter of the triangle is 13.56 units.
The perimeter of a shape on a coordinate plane is found by finding the distance between all points, and then adding them together. It's easier to write it out than to type so I'll attach a photo of my work.
The perimeter of a shape on a coordinate plane is found by finding the distance between all points, and then adding them together. It's easier to write it out than to type so I'll attach a photo of my work.