www.ncrtsolutions.in Key Notes Chapter 25 Areas of Qogles 1. Figures on the same Base and Between the same Parallels 2. Parallelograms on the same Base and between the same Parallels 3. Triangles on the same Base and between the same Parallels 1. "It was so great to hear from you today and it was such "This is going to sound funny and a little strange, but had just a couple of days ago. I'd love to get together if you're up for a cup of coffee," he continued, laying planning for years. weird timing," he said. you were in a dream I and tell you about it the trap he'd been 2. 3. She considered the birds to be her friends. She'd put out food for them each morning and then she'd watch as they came to the feeders to gorge themselves for the day. She wondered what they would do if something ever happened to her. Would they miss the meals she provided if she failed to put out the food one morning? 4. 5. His parents continued to question him. He didn't know what to say to them since they refused to believe the truth. He explained again and again, and they dismissed his explanation as a figment of his imagination. There was no way that grandpa, who had been dead for five years, could have told him where the treasure had been hidden. Of course, it didn't help that grandpa was roaring with laughter in the chair next to him as he tried to explain once again how he'd found it. 6. Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks Material Downloaded From http://www.ncrtsolutions.in www.ncrtsolutions.in Key Notes 7. There were only two ways to get out of this mess if they all worked together. The problem was that neither was all that appealing. One would likely cause everyone a huge amount of physical pain while the other would likely end up with everyone in jail. In Sam's mind, there was only one thing to do. He threw everyone else under the bus and he secretly sprinted away leaving the others to take the fall without him. 8. 9. Sometimes that's just the way it has to be. Sure, there were probably other options, but he didn't let them enter his mind. It was done and that was that. It was just the way it had to be. 10. 11. Devon couldn't figure out the color of her eyes. He initially would have guessed that they were green, but the more he looked at them he almost wanted to say they were a golden yellow. Then there were the flashes of red and orange that seemed to be streaked throughout them. It was almost as if her eyes were made of opal with the sun constantly glinting off of them and bringing out more color. They were definitely the most unusual pair of eyes he'd ever seen. 12. 13. The computer wouldn't start. She banged on the side and tried again. Nothing. She lifted it up and dropped it to the table. Still nothing. She banged her closed fist against the top. It was at this moment she saw the irony of trying to fix the machine with violence. 14. Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks Material Downloaded From http://www.ncrtsolutions.in www.ncrtsolutions.in Key Notes 15. They say you only come to peace with yourself when you know yourself better than those around you. Derick knew nothing about this. He thought he had found peace but this was an illusion as he was about to find out with an unexpected occurrence that he actually knew nothing about himself. 16. 17. "What is the best way to get what you want?" she asked. He looked down at the ground knowing that she wouldn't like his answer. He hesitated, knowing that the truth would only hurt. How was he going to tell her that the best way for him to get what he wanted was to leave her? 18. 19. To the two friends, the treehouse was much more than a treehouse. It was a sanctuary away from the other kids where they could be themselves without being teased or bullied. It was their secret fortress hidden high in the branches of a huge oak that only they knew existed. At least that is what they thought. They were more than a little annoyed when their two younger sisters decided to turn the treehouse into a princess castle by painting the inside pink and putting glitter everywhere. 20. Area of a figure is a number (in square unit) associated with the part of the plane enclosed by that figure. Two congruent figures have equal areas but the converse is not true. Area of a parallelogram = base X height Area of a triangle = 1 2 Area of a trapezium = base height 1 2 Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks Material Downloaded From http://www.ncrtsolutions.in www.ncrtsolutions.in Key Notes 1 Area of rhombus = 2 Parallelogram on the same base and between the same parallels are equal in area. in area. A parallelogram and a rectangle on the same base and between the same parallels are equal Triangles on the same base and between the same parallels are equal in area. If a triangle and parallelogram are on the same base and between the same parallels, then. 1 Area of triangle 2 A diagonal of parallelogram divides it into two triangles of equalareas. In parallelogram ABCD, we have Area of ABD area of ACD The diagonals of a parallelogram divide it into four triangles of equal areas therefore AOB)=ar( COD)=ar( AOD)=ar( BO Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks Material Downloaded From http://www.ncrtsolutions.in www.ncrtsolutions.in Key Notes If a parallelogram and a triangle are on the same base and between the same parallel, then area of the triangle is equal to one half area of the parallelogram. A median AD of a ar( ABD)=ar( CD ) ABC divides it into two triangles of equal areas. Therefore 1 If the medians of a intersect at G, then ar( AGB)=ar( AGC )=ar( BGC )= ar 3 Triangles with equal bases and equal areas have equal corresponding altitude. Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks Material Downloaded From http://www.ncrtsolutions.in