This document discusses identifying congruent figures and using congruence to find missing measures. It defines congruent figures as having the same shape and size. The Side-Side-Side Rule for triangles is explained - if the sides of two triangles are congruent, then the triangles are congruent. Examples are provided of identifying congruent triangles and polygons based on corresponding sides and angles. The document also provides examples of using known congruent figures to find missing side lengths or angle measures.
Parallelogram is a quadrilateral with two pairs of parallel sides.
There are 6 properties of parallelogram.
1. A diagonal of a parallelogram divides it into two congruent triangles.
2. Opposites sides of a parallelogram are congruent.
3. Opposite angles of a parallelogram are congruent.
4. Consecutive angles of a parallelogram are supplementary.
5. If one angle in a parallelogram is right, then all angles are right.
6. The diagonals of a parallelogram bisect each other.
The power point explains the concept of congruence in VII th standard .It explains the congruence of angles,vertices, triangles,quadrilaterals,and circle.
Parallelogram is a quadrilateral with two pairs of parallel sides.
There are 6 properties of parallelogram.
1. A diagonal of a parallelogram divides it into two congruent triangles.
2. Opposites sides of a parallelogram are congruent.
3. Opposite angles of a parallelogram are congruent.
4. Consecutive angles of a parallelogram are supplementary.
5. If one angle in a parallelogram is right, then all angles are right.
6. The diagonals of a parallelogram bisect each other.
The power point explains the concept of congruence in VII th standard .It explains the congruence of angles,vertices, triangles,quadrilaterals,and circle.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
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The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
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Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
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This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
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The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
2. Warm Up
Find the measure of the third angle in
the triangle, given two angle measures.
1. 58°, 104°
2. 32°, 63°
3. 90°, 38°
4. 42°, 88°
18°
85°
50°
52°
4. Which center circle do you
think is bigger? In spite of appearances, the two center
circles are congruent. Their apparent differences are
optical illusions. One way to determine whether figures
are congruent is to see if one figure will fit exactly over
the other one.
Look at the two patterns.
5. Identify any congruent figures.
A.
Additional Example 1: Identifying Congruent Figures in
the Real World
The sides of the octagons are not congruent.
Each side of the outer figure is larger than
each side of the inner figure.
6. Identify any congruent figures.
B.
Additional Example 1: Identifying Congruent Figures in
the Real World
The sectors in the figure
are congruent.
7. Two figures are congruent if they have
the same shape and size.
Remember!
8. Identify any congruent figures.
A.
Check It Out! Example 1
The sides of the figures are are not congruent.
9. Identify any congruent figures.
B.
Check It Out! Example 1
The figures are not congruent. The figure
on the outside is larger than the one on
the inside.
10. If all of the corresponding sides and
angles of two polygons are
congruent, then the polygons are
congruent. For triangles, if the
corresponding sides are congruent, then
the corresponding angles will always be
congruent. This is called the Side-Side-
Side Rule. Because of this rule, when
determining whether triangles are
congruent, you only need to determine
whether the sides are congruent.
11. Determine whether the triangles are congruent.
Additional Example 2: Identifying Congruent
Triangles
4 cm
6 cm 5 cm
4 cm
4 cm
4 cm
A
B
C
R
P
Q
AB = 4 cm
BC = 4 cm
AC = 6 cm
PQ = 4 cm
PR = 4 cm
RQ = 5 cm
The triangles are not congruent. Although two sides
in one triangle are congruent to two sides in the
other, the third sides are not congruent.
12. Determine whether the triangles are congruent.
Check It Out! Example 2
AC = 8 m
AB = 6 m
BC = 10 m
DF = 8 m
DE = 6 m
EF = 10 m
The notation ABC is read “triangle ABC.”
Reading Math
A
B
C F D
E
6 m 6 m
8 m8 m
10 m 10 m
By the Side-Side-Side Rule, ABC is congruent to DEF, or
ABC ≅ DEF. If you flip one triangle, it will fit exactly over
the other.
13. For polygons with more than three sides, it is not
enough to compare the measures of their sides.
For example, the corresponding sides of the
figures below are congruent, but the figures are
not congruent.
If you know that two figures are congruent, you
can find the missing measures in the figures.
14. Determine the missing measure in the set of
congruent polygons.
A.
Additional Example 3: Using Congruence to Find
Missing Measures
The corresponding angles
of congruent polygons are
congruent.
The missing angle
measure is 110°.
15. The corresponding sides of
congruent polygons are
congruent.
The missing side length
is 28 mm.
Determine the missing measure in the set of
congruent polygons.
B.
Additional Example 3: Using Congruence to Find
Missing Measures
16. Check It Out! Example 3
Determine the missing measure in the set of
congruent polygons.
A.
6 ft
8 ft
5 ft120°135°
60°
45°
6 ft
8 ft
5 ft
4 ft
120°135°
45°
60°
The missing side
length is 4 ft.
The corresponding
sides are congruent.
?
17. Check It Out! Example 3
Determine the missing measure in the set of
congruent polygons.
B.
The missing angle
measure is 130°.
The corresponding
angles are congruent.
6 ft
6 ft
8 ft
4 ft
5 ft
5 ft
4 ft
8 ft
10 ft
10 ft
120°
130°110°
100° 80°
110°
80° 100°
120°
?
18. Lesson Quiz
1. Identify any congruent figures.
2. Determine the missing measures in the
set of congruent polygons.
none
a = 11, b = 6, c = 110°
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