Table of Contents
Lines and Angles
Lines and angles are two of the most basic shapes in geometry. A line is a one-dimensional shape that has no width and extends infinitely in both directions. An angle is a two-dimensional shape formed by two lines that intersect at a point. The point where the lines intersect is called the vertex of the angle.
Angles in a Triangle
There are three angles in any triangle: the angle at the base, the angle at the vertex, and the angle in between. The angle at the base is always less than the angle at the vertex, and the angle in between is always less than either of those angles.
Intersecting and Non-Intersecting Lines
Intersecting lines are lines that intersect each other, meaning that they cross. Non-intersecting lines are lines that do not intersect each other, meaning that they do not cross.
Linear Pair of Angles
In mathematics, a linear pair of angles is a pair of angles that are formed by two intersecting lines. The angles are adjacent angles, and they are both acute angles.
Parallel Lines and Transversal
A line that crosses two other lines is called a transversal. The lines that the transversal crosses are called parallel lines because they are both straight lines that never meet.
Triangles
Triangles are three-sided shapes. They have three angles and three sides.
The three angles of a triangle always add up to 180 degrees.
In Daily Life
Helping children with homework
Helping a neighbor carry groceries
Picking up toys in a friend’s house
Helping an elderly person across the street
Organizing a community event
Teaching Sunday school
Lines and Angles – MCQs
1. A line has
A. no width
B. length and width
C. no length
D. length but no width
B. A line has length and width.
Multiple Choice Questions
1. What does the narrator do to get over his fear of heights?
A. He takes a course in acrophobia.
B. He gradually exposes himself to heights.
C. He avoids anything that has to do with heights.
D. He wears a helmet that blocks out all sensory input.
B. He gradually exposes himself to heights.
