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McGraw-Hill Math Grade 7 Answer Key Lesson 26.3 Polygons
Exercises
IDENTIFY
Label the polygons.
Question 1.
Answer:
Heptagon.
Explanation:
Hepta means seven and gon means sides.
A Heptagon is a polygon with seven sides and seven angles.
It has seven straight sides and seven corners or vertices.
Question 2.
Answer:
Octagon.
Explanation:
Octa means eight and gon means sides.
So, octagon consists of 8 sides.
It has eight angles and eight corners.
Question 3.
Answer:
Pentagon.
Explanation:
Penta denotes five and gon denotes angle.
A pentagon is a simple polygon, which has five sides and five angles.
Question 4.
Answer:
Hexagon.
Explanation:
Hexa means six and gona means angles.
A hexagon is a closed two-dimensional polygon with six sides.
Hexagon has 6 vertices and 6 angles.
Question 5.
Answer:
Hexagon.
Explanation:
Hexa means six and gona means angles.
A hexagon is a closed two-dimensional polygon with six sides.
Hexagon has 6 vertices and 6 angles.
Question 6.
Answer:
Octagon.
Explanation:
Octa means eight and gon means sides.
So, octagon consists of 8 sides.
It has eight angles and eight corners.
Question 7.
Answer:
Heptagon.
Explanation:
Hepta means seven and gon means sides.
A Heptagon is a polygon with seven sides and seven angles.
It has seven straight sides and seven corners or vertices.
Question 8.
Answer:
Pentagon.
Explanation:
Penta denotes five and gon denotes angle.
A pentagon is a simple polygon, which has five sides and five angles.
Question 9.
Are these two figures congruent? Why or why not?
Answer:
Yes, sides and angle measures are same.
Explanation:
Two geometric figures are said to be congruent,
if they have same size and shape.
The mirror image of one shape is same as the other.
Question 10.
Are these two figures congruent? Why or why not?
Answer:
No, bases are of different lengths.
Explanation:
Two geometric figures are said to be congruent,
if they have same size and shape.
The above given images are not congruent,
As, their bases are different.