The Triangle an...

Find the value of $$X.$$

The angles of a triangle are in the ratio of $$3:5:7.$$ What is the measure of the largest interior angle of the triangle?

In $$\Delta ABC,$$ $$\angle A = 43^{o}$$ and $$\angle C = 70^{o}.$$ What is the measure of $$\angle B?$$

Find the value of exterior angle.

Find the measure of an exterior angle at the base of an isosceles triangle measures $$78^o$$

What is the value of $$x$$ using Pythagoras theorem?

In $$\Delta$$ $$PQR$$, an exterior angle at $$R$$ is represented by $$5x + 10$$. If the two non-adjacent interior angles are represented by $$3x + 15$$ and $$3x - 20$$, find the value of the exterior angle, $$\angle$$ $$R$$.

In $$\triangle ABC$$, the line segment $$AM_1$$ is the median from vertex ____ to the opposite side $$BC$$ at $$M_1$$.

How many medians(drawn in fig.) are there in a triangle $$ABC$$?

Find the value of $$x$$ and $$y$$. (Use Pythagoras theorem).