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Geometry's Hidden Center

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Geometry's Hidden Center

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About this activity

Find the point that halves a segment.

Created by

Sanya
Sanya
United States

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Geometry's Hidden Center
 

Geometry's Hidden CenterOnline version

Find the point that halves a segment.

by Sanya
1

What are points that all lie on one straight line called?

Hints

In geometry, this property is called collinearity.

All points sit on a single straight line.

They don't form a scattered pattern.

2

I am a set of points that lie together on only one flat surface. What am I?

Hints

Not every group of points is coplanar.

They share the same plane.

3

A part of a line with two fixed endpoints. What am I?

Hints

Endpoints mark its ends.

It has finite length.

4

It starts at a fixed point and continues forever in one direction. What is it called?

Hints

It never ends in a given direction.

One endpoint is included.

5

Two rays share the same starting point and go in opposite directions along a straight line. What are they?

Hints

They emanate from a common endpoint.

They form a straight line together.

6

Two line segments that have the same length are called what?

Hints

Often denoted with matching tick marks.

Equality of length is the key idea.

7

A point, line, ray, segment, or plane that cuts a segment exactly at its middle is called what?

Hints

It divides the segment into two equal parts.

It intersects at the midpoint.

8

An angle that measures more than 0 degrees and less than 90 degrees is called what?

Hints

MIght be described as 'sharp' in some contexts.

Smaller than a right angle.

9

An angle that measures exactly 90 degrees is known as what?

Hints

Represents a perfect corner between perpendicular lines.

Often marked with a small square in diagrams.

10

An angle larger than 90 degrees but less than 180 degrees is called what?

Hints

The angle exceeds a straight cut is not reached.

It looks 'open' wider than a right angle.

 
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