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WorksheetsCh4 Introduction to Geometry
Total questions: 30
Worksheet time: 3hrs 6mins
This is a (a) .
This is a pair of (a) .
This is a (a) .
This is a (a) .
a line segment
a straight line
a line segment
a straight line
P. 4.4
A line is made up of an infinite number of points.
一條直線由無限個點所組成。
The Chinese meaning of the word "infinite" is:____________
組成
無限
點
直線
P. 4.5
In Geometry, a plane is a flat surface which has no thickness.
在幾何中，plane是一個沒有厚度的，平坦的表面。
The Chinese meaning of the word "thickness" is: __________
幾何
平坦
表面
厚度
P. 4.5
A plane __(1.包括)__ an _(2.無限)_ number of lines and it can be __(3.延展)__ in all __(4.方向)__without end.
1.contains 2.infinite 3.extended 4.directions
1.infinite 2.extended 3.directions 4. contains
1.directions 2.contains 3. extended 4. infinite
P. 4.6
Point P is called the ______________ where these two straight lines meet.
point
point of intersection
line
line of intersection
P. 4.6
A: (a)
P. 4.6
B: (a)
P. 4.6
C: (a)
P. 4.7
Naming Angles(角的命名)
Angles are commonly(通常) named in two ways(方法):
1. Name by the _(1.頂點)_ and the _(2.符號)_ ' ∠ '.
e.g. ∠ B
(1) angle (2) vertex
(1) vertex (2) symbol
(1) arms (2) vertex
P. 4.7
The angle above can be named as:
∠ ABC
∠ BAC
∠ B
∠ CBA
∠ CAB
Use the vertex and the symbol ' ∠ ' to name angles a in the figure.
以頂點及角的符號命名a.a= ∠ (a)
Use the vertex and the symbol ' ∠ ' to name angles b in the figure.
以頂點及角的符號命名b.b= ∠ (a)
Use the vertex and the symbol ' ∠ ' to name angles c in the figure.
以頂點及角的符號命名c.c= ∠ (a)
Use the vertex and the symbol ' ∠ ' to name angles d in the figure.
以頂點及角的符號命名d.
d= ∠ (a)
By observation(觀察) only, determine the type of the marked angle(被標示的角) in the figure.
The marked angle is a/an (a) angle.
By observation(觀察) only, determine the type of the marked angle(被標示的角) in the figure.
The marked angle is a/an (a) angle.
By observation(觀察) only, determine the type of the marked angle(被標示的角) in the figure.
The marked angle is a/an (a) angle.
P. 4.9
A right angle in a figure(圖) is usually indicated(表示) by the symbol(符號) '______' .
P. 4.9
To avoid(避免) confusion(混亂), the reflex angle marked on the right(右側) should be named as ' (a) ∠ ABC'.
P. 4.10
A protractor is semi-circular in shape and it is divided into 180 equal parts measuring 1 degree each.
量角器的形狀是半圓形的，被分割成180個相等的1度。
The Chinese meaning of the word "semi-circular" is: ______________
圓形
半圓形
柱體
P. 4.11
In the same plane, straight lines that will never _(1.相交)_ are called parallel lines.
在同一平面上，永不相交的直線稱為平行線。
(a)
Refer to the figure, ________________.
AB//EF and CD//GH
AB//GH and CD//EF
AB//CD and EF//GH
AC//BD and EG//FH
P. 4.12
If two lines in the same plane meet each other at a right angle (i.e. 90 degree), they are called _(1.垂直線)_.
若兩直線在同一平面上相交並成直角，它們稱作垂直線。
(a)
In the figure, ____________.
AB is parallel to CD and EF is perpendicular to GH.
AB is perpendicular to CD and EF is parallel to GH.
P. 4.12
We can say that 'AB is perpendicular to CD'. In symbols(符號), we write 'AB ____ CD'.
