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NAME:PRINCY DWIVEDI
CLASS VII A
MATHS PRESENTATION
COMPLEMENTARY ANGLES:
If the sum measures of two angle is 90 the angles are
called complementary angles. Fo example: 45
+45 =90 OR 35 + 65 =90
SUPPLEMENTARY ANGLES
If the sum measures of two angles is 180 are called
supplementary angles. For example 90 + 90= 180 OR
120 + 60 = 180
LINER PAIRS: A linear pair is a pair of adjacent angles angles
whose non common sides are opposite rays are
known as linear pairs.
ADJACENT ANGLES:
Adjacent angles have a common vertex and a common arms but no
common interior points
TRANSVERSAL LINES
A lines which intersects two or
more lines at distinct points is called a
transversal.
MEDIANS OF A TRIANGLE
A line segment AD, joining the mid point of
BC to its positive vertex. A is called the median of
a triangle.
ALTITUDES OF A TRIANGLE
An altitude has one end point at a vertex of the triangle and the other on the line
containing the opposite side. Through each vertex, an
altitude can be drawn.
THANK YOU SIR
From : princy dwivediClass : vii a
Teacher : ashok dwivedi sir.....
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