A LINE extends in: — Two directions, infinitely.A line has NO endpoints — it extends infinitely in BOTH directions.
A LINE SEGMENT has: — Two endpoints.A line segment has exactly TWO endpoints — it starts and stops at specific points.
A RAY has: — One endpoint and goes on forever in one direction.A ray has ONE endpoint (where it starts) and extends infinitely in ONE direction.
An ANGLE is formed by: — Two rays sharing a common endpoint (vertex).An angle is formed by two rays that share a common endpoint called the VERTEX.
The VERTEX of an angle is: — The shared endpoint where the two rays meet.The vertex is the SHARED endpoint — the "corner" where both rays of the angle originate.
Which is the MIDDLE letter in the angle name ∠ABC? — B (the vertex).In ∠ABC, the middle letter (B) is always the VERTEX. A and C are points on the two rays.
Clock hands at 3:00 form what type of angle? — Right (= 90°).At 3:00, the minute hand points up (12) and hour hand points right (3), forming a 90° RIGHT ANGLE.
Which does NOT have endpoints? — Line.A LINE has no endpoints — it goes on forever in both directions. Line segments and rays do have at least one endpoint.
PARALLEL lines: — Never intersect.Parallel lines NEVER intersect — they are always the same distance apart and go in the same direction.
PERPENDICULAR lines: — Intersect at exactly 90°.Perpendicular lines intersect at EXACTLY 90° — they form a right angle where they cross.
Which real-world object shows PARALLEL lines? — Railroad tracks.Railroad tracks run side by side, always the same distance apart — they are parallel!
Which real-world object shows PERPENDICULAR lines? — The corner of a room (wall meets floor).A wall meeting a floor at a corner forms a 90° angle — perpendicular!
A rectangle has how many pairs of PARALLEL sides? — 2.A rectangle has 2 pairs of parallel sides: top∥bottom and left∥right.
The symbol for PERPENDICULAR is: — ⊥.⊥ is the symbol for perpendicular. ∥ is the symbol for parallel.
The symbol for PARALLEL is: — ∥.∥ is the symbol for parallel. It looks like two parallel vertical lines!
Two lines that cross each other but NOT at 90° are called: — Intersecting lines (not perpendicular).Lines that cross at an angle other than 90° are just INTERSECTING lines — neither parallel nor perpendicular.
A line of symmetry divides a shape into: — Two mirror-image halves.A line of symmetry creates two halves that are MIRROR IMAGES of each other — if you fold on the line, they match exactly.
How many lines of symmetry does a square have? — 4.A square has 4 lines of symmetry: 2 through midpoints of opposite sides, and 2 through opposite corners.
How many lines of symmetry does a circle have? — Infinite.A circle has INFINITE lines of symmetry — any diameter (line through the center) is a line of symmetry!
How many lines of symmetry does a rectangle (non-square) have? — 2.A non-square rectangle has 2 lines of symmetry — one horizontal through the midpoints, one vertical through the midpoints. NOT the diagonals!
How can you test if a line is a line of symmetry? — Fold the shape on the line — if both halves match exactly, it is a line of symmetry.The FOLD TEST: fold the shape on the proposed symmetry line. If both halves overlap perfectly, it IS a line of symmetry.
The letter "A" has a line of symmetry. Which direction is it? — Vertical (down the middle).The letter A has VERTICAL symmetry — a line from the top point straight down divides it into two mirror halves.
Which letter has NO line of symmetry? — F.F has no line of symmetry — no matter how you fold it, the two halves do not match. H, M, and O all have at least one line of symmetry.
An equilateral triangle (all sides equal) has how many lines of symmetry? — 3.An equilateral triangle has 3 lines of symmetry — one from each vertex to the midpoint of the opposite side.