Complete the table: Shape Figure Number of lines of symmetry 30 ° - 60 ° - 90 ° set square Rhombus Regular heptagon 45 ° - 45 ° - 90 ° set square

We know that, A line of symmetry is the line that runs across the image, thus dividing it into two identical halves. 30 ° - 60 ° - 90 ° is the triangle. The shorter side is opposite the 30 degree angle, the longer side is opposite the 60 degree angle, and the hypotenuse is opposite the 90 degree angle. The figure of 30 ° - 60 ° - 90 ° set square as shown below: So, there is no line of symmetry in the 30 ° - 60 ° - 90 ° set square. A rhombus is a special case of a parallelogram. In a rhombus, opposite sides are parallel and the opposite angles are equal. The figure of the rhombus as shown below. So, there are 2 lines of symmetry in the rhombus. A heptagon is a seven-sided polygon that has seven angles, seven vertices, and seven edges. The figure of the Regular heptagon as shown below. So, there are 7 lines of symmetry in the regular heptagon. A 45 ° - 45 ° - 90 ° triangle is a special type of right triangle . The figure of 45 ° - 45 ° - 90 ° set square as shown below. So, there is only one line of symmetry in the 45 ° - 45 ° - 90 ° set square. Hence, the complete table as shown below. Shape Figure Number of lines of symmetry 30 ° - 60 ° - 90 ° set square 0 Rhombus 2 Regular heptagon 7 45 ° - 45 ° - 90 ° set square 1

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Foundation Course Mathematics>Chapter 13 - Symmetry>Exercise

Exercise

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Subject Experts Mathematics Solutions for Exercise

Simple step-by-step solutions to Exercise questions of Symmetry from Foundation Course Mathematics. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.