Question 11 Mark
In Fig. if AB = AC and angle B = angle C. Prove that BQ = CP
Answer
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In Fig. if AB = AC and angle B = angle C. Prove that BQ = CP
Question 21 Mark
Prove that the sum of three altitudes of a triangle is less than the sum of its sides.
Answer
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Question 31 Mark
CDE is an equilateral triangle formed on a side CD of a square ABCD. Show that $\triangle A D E \cong \triangle B C E$.
Answer
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Question 41 Mark
Find the measure of each angle of an equilateral triangle.
Answer
View full question & answer→$60^{\circ}$
Question 51 Mark
ABC is an isosceles triangle in which AB = AC BE and CF are its two medians. Show that BE = CF
Answer
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Question 61 Mark
In triangles ABC and CDE, if $AC = CE, BC = CD, \angle A = 60^{\circ}, \angle C = 30^{\circ}$ and $\angle D = 90^{\circ}$. Are two triangles congruent?
Answer
View full question & answer→Yes
Question 71 Mark
In two triangles ABC and ADC, if AB = AD and BC = CD Are they congruent?
Answer
View full question & answer→Yes
Question 81 Mark
If ABC and DEF are two triangles such that $AC = 2.5 cm, BC = 5 cm, \angle C = 75^{\circ}$ $DE = 2.5 cm, DF = 5 cm$ and $\angle D = 75^{\circ}$. Are two triangles congruent?
Answer
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Question 91 Mark
In two triangles ABC and DEF, it is given that $\angle A = \angle D, \angle B = \angle E$ and $\angle C = \angle F$. Arethe two triangles necessarily congruent?
Answer
View full question & answer→No
Question 101 Mark
In two congruent triangles ABC and DEF, if AB = DE and BC = EF . Name the pairs of equal angles.
Answer
View full question & answer→$\angle A=\angle D, \angle B=\angle E, \angle C=\angle F$