Find the midpoint of a segment

Average the x values and the y values of two points to find the point halfway between them.

The midpoint of (x1, y1) and (x2, y2) is ((x1 + x2) / 2, (y1 + y2) / 2). For (2, 3) and (8, 11) the midpoint is (5, 7).

Start on the main screen: Press 2nd then mode (QUIT) to get back to the home screen. Pressing clear on a menu also backs out of it.

You should see(2+8)/2 5 (3+11)/2 7

Start on the main screen: Press MENU, then 1 (Calculate) to return to the main calculation screen. AC clears the line you are on.

You should see(3+11)÷2 7

Start on the main screen: Press EXIT (once or twice) to close any menu and return to the plain stack view of Y and X.

Key in 2 ENTER 8, add, then divide by 2. This leaves the x coordinate, 5.
2ENTER8+2÷
Do the y values the same way: 3 ENTER 11, add, divide by 2. The two-line display shows both answers.
3ENTER11+2÷

You should seey: 5.0000 x: 7.0000

The Y line holds the x coordinate (5) and the X line the y coordinate (7).

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