Geometry

3. Straight line segnment that passes through the center of a circle, connecting two points on its edge
4. Two lines that intersect at a single point, forming a 90-degree right angle
7. A transformation that turns a figure around a fixed point, known as the center of rotation
8. A geometric transformation that changes the size of a figure-enlarging or reducing it-without altering its shape
10. Two or more figures are exactly the same shape and size
12. Two angles whose measures sum to exactly 180
14. Type of angle that measures greater than 0
15. Straight-line distance from the center of a circle or sphere to any point on its outer edge
17. 4-sided flat shape where opposite sides are parallel and equal in length
18. A perpendicular line segment drawn from a vertex of a polygon ussally a triangle to the opposite side, creating a 90 degree angle
19. A polygon with three equal-length sides and three equal interior angles of 60 each
20. Type of angle that measures greater than 90
21. A right transformation that "slides" a figure a specific distance in a given direction, preserving its size, and shape

1. Triangle where all three sides have different lengths and all three angles
2. Two angles whose measures sum to exactly 90
5. A geometric transformation that "flips" a figure across a line, creating a mirror image where each point is equidistant from the line but on the opposite side
6. Coplanar straight lines that never intersect and maintain a constant distance apart
9. Linear distance around a circle or any closed curved shape, representing its perimeter
11. A 3D geometric with two parallel, identical circulal bases connected by a curved side.
13. Angle with its vertex on a circle and its sides as chords that intersect the circle
16. Total area covering the outside of a 3D object, calculated by summing the areas of all its faces top and bottom and sides