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Answers
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Explanation:
1. The sum of 5x and 5x² is 5x(1 + x) .
2. The distance around a circular region is called its circumference.
3. If the base of a triangle is doubled and the height halved, then its area will be same as the original area.
4. Two angles are said to be congruent if they have equal measure or length.
5. In ABC, the included angle between BC and CA is angle C.
6. In a right triangle the hypotenuse is the longest side.
7. The line segment joining the vertex of a triangle to the midpoint of the opposite side is known as median of a triangle.
8. The top view of the solid is called aerial view.
9. The ratio 10:21 in the simplest form is 10:21.
10. The line of symmetry divides a figure into two congruent halves.
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